Home / 21,117,812,176.49-29,145,079,163.75-12,544,272,689.13

Finding the Fourth Proportional to 21,117,812,176.49, 29,145,079,163.75 and 12,544,272,689.13

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Solution

The fourth proportional to 21,117,812,176.49, 29,145,079,163.75 and 12,544,272,689.13 is: 17,312,580,371.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,812,176.49 : 29,145,079,163.75 = 12,544,272,689.13 : x
  2. Step 2: Convert to fraction form
    21,117,812,176.49/29,145,079,163.75 = 12,544,272,689.13/x
  3. Step 3: Cross multiply
    21,117,812,176.49x = 29,145,079,163.75 × 12,544,272,689.13
  4. Step 4: Simplify right side
    21,117,812,176.49x = 365,603,820,576,360,890,368
  5. Step 5: Solve for x
    x = 365,603,820,576,360,890,368/21,117,812,176.49
  6. Step 6: Final answer
    x = 17,312,580,371.53

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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.