Home / 20,432.08-28,196.38-11,479.96

Finding the Fourth Proportional to 20,432.08, 28,196.38 and 11,479.96

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Solution

The fourth proportional to 20,432.08, 28,196.38 and 11,479.96 is: 15,842.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.08 : 28,196.38 = 11,479.96 : x
  2. Step 2: Convert to fraction form
    20,432.08/28,196.38 = 11,479.96/x
  3. Step 3: Cross multiply
    20,432.08x = 28,196.38 × 11,479.96
  4. Step 4: Simplify right side
    20,432.08x = 323,693,314.54
  5. Step 5: Solve for x
    x = 323,693,314.54/20,432.08
  6. Step 6: Final answer
    x = 15,842.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.