Home / 21,117,812,175.99-29,145,079,163.06-12,544,272,688.64

Finding the Fourth Proportional to 21,117,812,175.99, 29,145,079,163.06 and 12,544,272,688.64

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Solution

The fourth proportional to 21,117,812,175.99, 29,145,079,163.06 and 12,544,272,688.64 is: 17,312,580,370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,812,175.99 : 29,145,079,163.06 = 12,544,272,688.64 : x
  2. Step 2: Convert to fraction form
    21,117,812,175.99/29,145,079,163.06 = 12,544,272,688.64/x
  3. Step 3: Cross multiply
    21,117,812,175.99x = 29,145,079,163.06 × 12,544,272,688.64
  4. Step 4: Simplify right side
    21,117,812,175.99x = 365,603,820,553,215,868,928
  5. Step 5: Solve for x
    x = 365,603,820,553,215,868,928/21,117,812,175.99
  6. Step 6: Final answer
    x = 17,312,580,370.84

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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.