Home / 20,452.08-28,229.76-12,071.28

Finding the Fourth Proportional to 20,452.08, 28,229.76 and 12,071.28

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Solution

The fourth proportional to 20,452.08, 28,229.76 and 12,071.28 is: 16,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.08 : 28,229.76 = 12,071.28 : x
  2. Step 2: Convert to fraction form
    20,452.08/28,229.76 = 12,071.28/x
  3. Step 3: Cross multiply
    20,452.08x = 28,229.76 × 12,071.28
  4. Step 4: Simplify right side
    20,452.08x = 340,769,337.29
  5. Step 5: Solve for x
    x = 340,769,337.29/20,452.08
  6. Step 6: Final answer
    x = 16,661.84

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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.