Home / 22,569.60-31,140.80-13,132.80

Finding the Fourth Proportional to 22,569.60, 31,140.80 and 13,132.80

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Solution

The fourth proportional to 22,569.60, 31,140.80 and 13,132.80 is: 18,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,569.60 : 31,140.80 = 13,132.80 : x
  2. Step 2: Convert to fraction form
    22,569.60/31,140.80 = 13,132.80/x
  3. Step 3: Cross multiply
    22,569.60x = 31,140.80 × 13,132.80
  4. Step 4: Simplify right side
    22,569.60x = 408,965,898.24
  5. Step 5: Solve for x
    x = 408,965,898.24/22,569.60
  6. Step 6: Final answer
    x = 18,120.21

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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.