Home / 31,861.87-47,797.97-10,508.21

Finding the Fourth Proportional to 31,861.87, 47,797.97 and 10,508.21

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Solution

The fourth proportional to 31,861.87, 47,797.97 and 10,508.21 is: 15,764.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.87 : 47,797.97 = 10,508.21 : x
  2. Step 2: Convert to fraction form
    31,861.87/47,797.97 = 10,508.21/x
  3. Step 3: Cross multiply
    31,861.87x = 47,797.97 × 10,508.21
  4. Step 4: Simplify right side
    31,861.87x = 502,271,053.15
  5. Step 5: Solve for x
    x = 502,271,053.15/31,861.87
  6. Step 6: Final answer
    x = 15,764.02

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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.