Home / 20,691.72-31,026.87-10,157.04

Finding the Fourth Proportional to 20,691.72, 31,026.87 and 10,157.04

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Solution

The fourth proportional to 20,691.72, 31,026.87 and 10,157.04 is: 15,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.72 : 31,026.87 = 10,157.04 : x
  2. Step 2: Convert to fraction form
    20,691.72/31,026.87 = 10,157.04/x
  3. Step 3: Cross multiply
    20,691.72x = 31,026.87 × 10,157.04
  4. Step 4: Simplify right side
    20,691.72x = 315,141,159.66
  5. Step 5: Solve for x
    x = 315,141,159.66/20,691.72
  6. Step 6: Final answer
    x = 15,230.30

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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.