Home / 22,569.52-31,139.76-13,136.80

Finding the Fourth Proportional to 22,569.52, 31,139.76 and 13,136.80

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Solution

The fourth proportional to 22,569.52, 31,139.76 and 13,136.80 is: 18,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,569.52 : 31,139.76 = 13,136.80 : x
  2. Step 2: Convert to fraction form
    22,569.52/31,139.76 = 13,136.80/x
  3. Step 3: Cross multiply
    22,569.52x = 31,139.76 × 13,136.80
  4. Step 4: Simplify right side
    22,569.52x = 409,076,799.17
  5. Step 5: Solve for x
    x = 409,076,799.17/22,569.52
  6. Step 6: Final answer
    x = 18,125.19

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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.