Home / 22,700.73-31,330.82-13,140.87

Finding the Fourth Proportional to 22,700.73, 31,330.82 and 13,140.87

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Solution

The fourth proportional to 22,700.73, 31,330.82 and 13,140.87 is: 18,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,700.73 : 31,330.82 = 13,140.87 : x
  2. Step 2: Convert to fraction form
    22,700.73/31,330.82 = 13,140.87/x
  3. Step 3: Cross multiply
    22,700.73x = 31,330.82 × 13,140.87
  4. Step 4: Simplify right side
    22,700.73x = 411,714,010.25
  5. Step 5: Solve for x
    x = 411,714,010.25/22,700.73
  6. Step 6: Final answer
    x = 18,136.60

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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.