Home / 28,654.73-42,981.89-15,590.15

Finding the Fourth Proportional to 28,654.73, 42,981.89 and 15,590.15

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Solution

The fourth proportional to 28,654.73, 42,981.89 and 15,590.15 is: 23,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.73 : 42,981.89 = 15,590.15 : x
  2. Step 2: Convert to fraction form
    28,654.73/42,981.89 = 15,590.15/x
  3. Step 3: Cross multiply
    28,654.73x = 42,981.89 × 15,590.15
  4. Step 4: Simplify right side
    28,654.73x = 670,093,819.52
  5. Step 5: Solve for x
    x = 670,093,819.52/28,654.73
  6. Step 6: Final answer
    x = 23,385.11

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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.