Home / 21,117,812,175.49-29,145,079,162.37-12,544,272,688.13

Finding the Fourth Proportional to 21,117,812,175.49, 29,145,079,162.37 and 12,544,272,688.13

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Solution

The fourth proportional to 21,117,812,175.49, 29,145,079,162.37 and 12,544,272,688.13 is: 17,312,580,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,812,175.49 : 29,145,079,162.37 = 12,544,272,688.13 : x
  2. Step 2: Convert to fraction form
    21,117,812,175.49/29,145,079,162.37 = 12,544,272,688.13/x
  3. Step 3: Cross multiply
    21,117,812,175.49x = 29,145,079,162.37 × 12,544,272,688.13
  4. Step 4: Simplify right side
    21,117,812,175.49x = 365,603,820,529,904,713,728
  5. Step 5: Solve for x
    x = 365,603,820,529,904,713,728/21,117,812,175.49
  6. Step 6: Final answer
    x = 17,312,580,370.15

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.