Home / 31,747.20-47,599.20-15,115.20

Finding the Fourth Proportional to 31,747.20, 47,599.20 and 15,115.20

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Solution

The fourth proportional to 31,747.20, 47,599.20 and 15,115.20 is: 22,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747.20 : 47,599.20 = 15,115.20 : x
  2. Step 2: Convert to fraction form
    31,747.20/47,599.20 = 15,115.20/x
  3. Step 3: Cross multiply
    31,747.20x = 47,599.20 × 15,115.20
  4. Step 4: Simplify right side
    31,747.20x = 719,471,427.84
  5. Step 5: Solve for x
    x = 719,471,427.84/31,747.20
  6. Step 6: Final answer
    x = 22,662.52

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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.