Home / 28,321.38-42,479.32-8,600.11

Finding the Fourth Proportional to 28,321.38, 42,479.32 and 8,600.11

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Solution

The fourth proportional to 28,321.38, 42,479.32 and 8,600.11 is: 12,899.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.38 : 42,479.32 = 8,600.11 : x
  2. Step 2: Convert to fraction form
    28,321.38/42,479.32 = 8,600.11/x
  3. Step 3: Cross multiply
    28,321.38x = 42,479.32 × 8,600.11
  4. Step 4: Simplify right side
    28,321.38x = 365,326,824.73
  5. Step 5: Solve for x
    x = 365,326,824.73/28,321.38
  6. Step 6: Final answer
    x = 12,899.33

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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.