Home / 20,824.80-31,237.68-7,497.12

Finding the Fourth Proportional to 20,824.80, 31,237.68 and 7,497.12

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Solution

The fourth proportional to 20,824.80, 31,237.68 and 7,497.12 is: 11,245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.80 : 31,237.68 = 7,497.12 : x
  2. Step 2: Convert to fraction form
    20,824.80/31,237.68 = 7,497.12/x
  3. Step 3: Cross multiply
    20,824.80x = 31,237.68 × 7,497.12
  4. Step 4: Simplify right side
    20,824.80x = 234,192,635.48
  5. Step 5: Solve for x
    x = 234,192,635.48/20,824.80
  6. Step 6: Final answer
    x = 11,245.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.