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Finding the Fourth Proportional to 28,337.91, 42,509.25 and 8,616.65

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Solution

The fourth proportional to 28,337.91, 42,509.25 and 8,616.65 is: 12,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.91 : 42,509.25 = 8,616.65 : x
  2. Step 2: Convert to fraction form
    28,337.91/42,509.25 = 8,616.65/x
  3. Step 3: Cross multiply
    28,337.91x = 42,509.25 × 8,616.65
  4. Step 4: Simplify right side
    28,337.91x = 366,287,116.47
  5. Step 5: Solve for x
    x = 366,287,116.47/28,337.91
  6. Step 6: Final answer
    x = 12,925.69

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1.5x scale

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.