Home / 28,318.44-39,079.92-15,572.18

Finding the Fourth Proportional to 28,318.44, 39,079.92 and 15,572.18

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Solution

The fourth proportional to 28,318.44, 39,079.92 and 15,572.18 is: 21,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.44 : 39,079.92 = 15,572.18 : x
  2. Step 2: Convert to fraction form
    28,318.44/39,079.92 = 15,572.18/x
  3. Step 3: Cross multiply
    28,318.44x = 39,079.92 × 15,572.18
  4. Step 4: Simplify right side
    28,318.44x = 608,559,353.23
  5. Step 5: Solve for x
    x = 608,559,353.23/28,318.44
  6. Step 6: Final answer
    x = 21,489.86

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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.