Home / 21,407.76-29,523.19-18,381.94

Finding the Fourth Proportional to 21,407.76, 29,523.19 and 18,381.94

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Solution

The fourth proportional to 21,407.76, 29,523.19 and 18,381.94 is: 25,350.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.76 : 29,523.19 = 18,381.94 : x
  2. Step 2: Convert to fraction form
    21,407.76/29,523.19 = 18,381.94/x
  3. Step 3: Cross multiply
    21,407.76x = 29,523.19 × 18,381.94
  4. Step 4: Simplify right side
    21,407.76x = 542,693,359.57
  5. Step 5: Solve for x
    x = 542,693,359.57/21,407.76
  6. Step 6: Final answer
    x = 25,350.32

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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.