Home / 28,382.72-42,565.02-9,403.88

Finding the Fourth Proportional to 28,382.72, 42,565.02 and 9,403.88

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Solution

The fourth proportional to 28,382.72, 42,565.02 and 9,403.88 is: 14,102.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.72 : 42,565.02 = 9,403.88 : x
  2. Step 2: Convert to fraction form
    28,382.72/42,565.02 = 9,403.88/x
  3. Step 3: Cross multiply
    28,382.72x = 42,565.02 × 9,403.88
  4. Step 4: Simplify right side
    28,382.72x = 400,276,340.28
  5. Step 5: Solve for x
    x = 400,276,340.28/28,382.72
  6. Step 6: Final answer
    x = 14,102.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.