Home / 18,742.08-28,104.88-9,974.92

Finding the Fourth Proportional to 18,742.08, 28,104.88 and 9,974.92

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Solution

The fourth proportional to 18,742.08, 28,104.88 and 9,974.92 is: 14,957.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.08 : 28,104.88 = 9,974.92 : x
  2. Step 2: Convert to fraction form
    18,742.08/28,104.88 = 9,974.92/x
  3. Step 3: Cross multiply
    18,742.08x = 28,104.88 × 9,974.92
  4. Step 4: Simplify right side
    18,742.08x = 280,343,929.61
  5. Step 5: Solve for x
    x = 280,343,929.61/18,742.08
  6. Step 6: Final answer
    x = 14,957.99

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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.