Home / 20,712.08-31,037.39-15,213.20

Finding the Fourth Proportional to 20,712.08, 31,037.39 and 15,213.20

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Solution

The fourth proportional to 20,712.08, 31,037.39 and 15,213.20 is: 22,797.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.08 : 31,037.39 = 15,213.20 : x
  2. Step 2: Convert to fraction form
    20,712.08/31,037.39 = 15,213.20/x
  3. Step 3: Cross multiply
    20,712.08x = 31,037.39 × 15,213.20
  4. Step 4: Simplify right side
    20,712.08x = 472,177,790.30
  5. Step 5: Solve for x
    x = 472,177,790.30/20,712.08
  6. Step 6: Final answer
    x = 22,797.22

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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.