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Finding the Fourth Proportional to 20,375.53, 30,555.81 and 7,045.11

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Solution

The fourth proportional to 20,375.53, 30,555.81 and 7,045.11 is: 10,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.53 : 30,555.81 = 7,045.11 : x
  2. Step 2: Convert to fraction form
    20,375.53/30,555.81 = 7,045.11/x
  3. Step 3: Cross multiply
    20,375.53x = 30,555.81 × 7,045.11
  4. Step 4: Simplify right side
    20,375.53x = 215,269,042.59
  5. Step 5: Solve for x
    x = 215,269,042.59/20,375.53
  6. Step 6: Final answer
    x = 10,565.08

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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.