Home / 20,439.57-30,651.30-7,957.92

Finding the Fourth Proportional to 20,439.57, 30,651.30 and 7,957.92

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Solution

The fourth proportional to 20,439.57, 30,651.30 and 7,957.92 is: 11,933.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.57 : 30,651.30 = 7,957.92 : x
  2. Step 2: Convert to fraction form
    20,439.57/30,651.30 = 7,957.92/x
  3. Step 3: Cross multiply
    20,439.57x = 30,651.30 × 7,957.92
  4. Step 4: Simplify right side
    20,439.57x = 243,920,593.30
  5. Step 5: Solve for x
    x = 243,920,593.30/20,439.57
  6. Step 6: Final answer
    x = 11,933.74

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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.