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Finding the Fourth Proportional to 28,473.65, 42,714.55 and 8,753.86

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Solution

The fourth proportional to 28,473.65, 42,714.55 and 8,753.86 is: 13,132.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.65 : 42,714.55 = 8,753.86 : x
  2. Step 2: Convert to fraction form
    28,473.65/42,714.55 = 8,753.86/x
  3. Step 3: Cross multiply
    28,473.65x = 42,714.55 × 8,753.86
  4. Step 4: Simplify right side
    28,473.65x = 373,917,190.66
  5. Step 5: Solve for x
    x = 373,917,190.66/28,473.65
  6. Step 6: Final answer
    x = 13,132.04

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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.