Home / 18,710.11-25,819.31-11,152.55

Finding the Fourth Proportional to 18,710.11, 25,819.31 and 11,152.55

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Solution

The fourth proportional to 18,710.11, 25,819.31 and 11,152.55 is: 15,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.11 : 25,819.31 = 11,152.55 : x
  2. Step 2: Convert to fraction form
    18,710.11/25,819.31 = 11,152.55/x
  3. Step 3: Cross multiply
    18,710.11x = 25,819.31 × 11,152.55
  4. Step 4: Simplify right side
    18,710.11x = 287,951,092.94
  5. Step 5: Solve for x
    x = 287,951,092.94/18,710.11
  6. Step 6: Final answer
    x = 15,390.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.