Home / 20,424.64-28,187.52-11,472.96

Finding the Fourth Proportional to 20,424.64, 28,187.52 and 11,472.96

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Solution

The fourth proportional to 20,424.64, 28,187.52 and 11,472.96 is: 15,833.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.64 : 28,187.52 = 11,472.96 : x
  2. Step 2: Convert to fraction form
    20,424.64/28,187.52 = 11,472.96/x
  3. Step 3: Cross multiply
    20,424.64x = 28,187.52 × 11,472.96
  4. Step 4: Simplify right side
    20,424.64x = 323,394,289.46
  5. Step 5: Solve for x
    x = 323,394,289.46/20,424.64
  6. Step 6: Final answer
    x = 15,833.54

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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.