Home / 20,338.05-30,508.02-7,191.75

Finding the Fourth Proportional to 20,338.05, 30,508.02 and 7,191.75

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Solution

The fourth proportional to 20,338.05, 30,508.02 and 7,191.75 is: 10,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.05 : 30,508.02 = 7,191.75 : x
  2. Step 2: Convert to fraction form
    20,338.05/30,508.02 = 7,191.75/x
  3. Step 3: Cross multiply
    20,338.05x = 30,508.02 × 7,191.75
  4. Step 4: Simplify right side
    20,338.05x = 219,406,052.84
  5. Step 5: Solve for x
    x = 219,406,052.84/20,338.05
  6. Step 6: Final answer
    x = 10,787.96

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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.