Home / 28,426.23-39,229.13-15,679.97

Finding the Fourth Proportional to 28,426.23, 39,229.13 and 15,679.97

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Solution

The fourth proportional to 28,426.23, 39,229.13 and 15,679.97 is: 21,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.23 : 39,229.13 = 15,679.97 : x
  2. Step 2: Convert to fraction form
    28,426.23/39,229.13 = 15,679.97/x
  3. Step 3: Cross multiply
    28,426.23x = 39,229.13 × 15,679.97
  4. Step 4: Simplify right side
    28,426.23x = 615,111,306.98
  5. Step 5: Solve for x
    x = 615,111,306.98/28,426.23
  6. Step 6: Final answer
    x = 21,638.86

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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.