Home / 18,729.28-28,093.90-5,581.32

Finding the Fourth Proportional to 18,729.28, 28,093.90 and 5,581.32

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Solution

The fourth proportional to 18,729.28, 28,093.90 and 5,581.32 is: 8,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.28 : 28,093.90 = 5,581.32 : x
  2. Step 2: Convert to fraction form
    18,729.28/28,093.90 = 5,581.32/x
  3. Step 3: Cross multiply
    18,729.28x = 28,093.90 × 5,581.32
  4. Step 4: Simplify right side
    18,729.28x = 156,801,045.95
  5. Step 5: Solve for x
    x = 156,801,045.95/18,729.28
  6. Step 6: Final answer
    x = 8,371.97

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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.