Home / 18,285.58-27,432.20-10,391.76

Finding the Fourth Proportional to 18,285.58, 27,432.20 and 10,391.76

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Solution

The fourth proportional to 18,285.58, 27,432.20 and 10,391.76 is: 15,589.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.58 : 27,432.20 = 10,391.76 : x
  2. Step 2: Convert to fraction form
    18,285.58/27,432.20 = 10,391.76/x
  3. Step 3: Cross multiply
    18,285.58x = 27,432.20 × 10,391.76
  4. Step 4: Simplify right side
    18,285.58x = 285,068,864.65
  5. Step 5: Solve for x
    x = 285,068,864.65/18,285.58
  6. Step 6: Final answer
    x = 15,589.82

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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.