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Finding the Fourth Proportional to 28,565.04, 42,845.16 and 9,845.04

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Solution

The fourth proportional to 28,565.04, 42,845.16 and 9,845.04 is: 14,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.04 : 42,845.16 = 9,845.04 : x
  2. Step 2: Convert to fraction form
    28,565.04/42,845.16 = 9,845.04/x
  3. Step 3: Cross multiply
    28,565.04x = 42,845.16 × 9,845.04
  4. Step 4: Simplify right side
    28,565.04x = 421,812,314.01
  5. Step 5: Solve for x
    x = 421,812,314.01/28,565.04
  6. Step 6: Final answer
    x = 14,766.73

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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.