Home / 20,652.16-28,500.24-11,220.88

Finding the Fourth Proportional to 20,652.16, 28,500.24 and 11,220.88

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Solution

The fourth proportional to 20,652.16, 28,500.24 and 11,220.88 is: 15,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.16 : 28,500.24 = 11,220.88 : x
  2. Step 2: Convert to fraction form
    20,652.16/28,500.24 = 11,220.88/x
  3. Step 3: Cross multiply
    20,652.16x = 28,500.24 × 11,220.88
  4. Step 4: Simplify right side
    20,652.16x = 319,797,773.01
  5. Step 5: Solve for x
    x = 319,797,773.01/20,652.16
  6. Step 6: Final answer
    x = 15,484.96

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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.