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Finding the Fourth Proportional to 28,311, 42,459.84 and 11,654.52

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Solution

The fourth proportional to 28,311, 42,459.84 and 11,654.52 is: 17,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311 : 42,459.84 = 11,654.52 : x
  2. Step 2: Convert to fraction form
    28,311/42,459.84 = 11,654.52/x
  3. Step 3: Cross multiply
    28,311x = 42,459.84 × 11,654.52
  4. Step 4: Simplify right side
    28,311x = 494,849,054.48
  5. Step 5: Solve for x
    x = 494,849,054.48/28,311
  6. Step 6: Final answer
    x = 17,479.04

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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.