Home / 20,631.94-28,472.11-11,200.50

Finding the Fourth Proportional to 20,631.94, 28,472.11 and 11,200.50

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Solution

The fourth proportional to 20,631.94, 28,472.11 and 11,200.50 is: 15,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.94 : 28,472.11 = 11,200.50 : x
  2. Step 2: Convert to fraction form
    20,631.94/28,472.11 = 11,200.50/x
  3. Step 3: Cross multiply
    20,631.94x = 28,472.11 × 11,200.50
  4. Step 4: Simplify right side
    20,631.94x = 318,901,840.05
  5. Step 5: Solve for x
    x = 318,901,840.05/20,631.94
  6. Step 6: Final answer
    x = 15,456.71

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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.