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Finding the Fourth Proportional to 18,750.08, 28,125.12 and 7,654.82

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Solution

The fourth proportional to 18,750.08, 28,125.12 and 7,654.82 is: 11,482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.08 : 28,125.12 = 7,654.82 : x
  2. Step 2: Convert to fraction form
    18,750.08/28,125.12 = 7,654.82/x
  3. Step 3: Cross multiply
    18,750.08x = 28,125.12 × 7,654.82
  4. Step 4: Simplify right side
    18,750.08x = 215,292,731.08
  5. Step 5: Solve for x
    x = 215,292,731.08/18,750.08
  6. Step 6: Final answer
    x = 11,482.23

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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.