Home / 28,311.73-42,479.24-12,508.42

Finding the Fourth Proportional to 28,311.73, 42,479.24 and 12,508.42

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Solution

The fourth proportional to 28,311.73, 42,479.24 and 12,508.42 is: 18,767.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.73 : 42,479.24 = 12,508.42 : x
  2. Step 2: Convert to fraction form
    28,311.73/42,479.24 = 12,508.42/x
  3. Step 3: Cross multiply
    28,311.73x = 42,479.24 × 12,508.42
  4. Step 4: Simplify right side
    28,311.73x = 531,348,175.20
  5. Step 5: Solve for x
    x = 531,348,175.20/28,311.73
  6. Step 6: Final answer
    x = 18,767.77

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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.