Home / 22,640.90-31,242.87-12,568.55

Finding the Fourth Proportional to 22,640.90, 31,242.87 and 12,568.55

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Solution

The fourth proportional to 22,640.90, 31,242.87 and 12,568.55 is: 17,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,640.90 : 31,242.87 = 12,568.55 : x
  2. Step 2: Convert to fraction form
    22,640.90/31,242.87 = 12,568.55/x
  3. Step 3: Cross multiply
    22,640.90x = 31,242.87 × 12,568.55
  4. Step 4: Simplify right side
    22,640.90x = 392,677,417.52
  5. Step 5: Solve for x
    x = 392,677,417.52/22,640.90
  6. Step 6: Final answer
    x = 17,343.72

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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.