Home / 21,192.29-29,247.68-13,542.57

Finding the Fourth Proportional to 21,192.29, 29,247.68 and 13,542.57

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Solution

The fourth proportional to 21,192.29, 29,247.68 and 13,542.57 is: 18,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.29 : 29,247.68 = 13,542.57 : x
  2. Step 2: Convert to fraction form
    21,192.29/29,247.68 = 13,542.57/x
  3. Step 3: Cross multiply
    21,192.29x = 29,247.68 × 13,542.57
  4. Step 4: Simplify right side
    21,192.29x = 396,088,753.74
  5. Step 5: Solve for x
    x = 396,088,753.74/21,192.29
  6. Step 6: Final answer
    x = 18,690.23

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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.