Home / 20,996.28-31,505.34-9,306.76

Finding the Fourth Proportional to 20,996.28, 31,505.34 and 9,306.76

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Solution

The fourth proportional to 20,996.28, 31,505.34 and 9,306.76 is: 13,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.28 : 31,505.34 = 9,306.76 : x
  2. Step 2: Convert to fraction form
    20,996.28/31,505.34 = 9,306.76/x
  3. Step 3: Cross multiply
    20,996.28x = 31,505.34 × 9,306.76
  4. Step 4: Simplify right side
    20,996.28x = 293,212,638.10
  5. Step 5: Solve for x
    x = 293,212,638.10/20,996.28
  6. Step 6: Final answer
    x = 13,964.98

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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.