Home / 20,358.72-30,539.70-8,672.04

Finding the Fourth Proportional to 20,358.72, 30,539.70 and 8,672.04

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Solution

The fourth proportional to 20,358.72, 30,539.70 and 8,672.04 is: 13,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.72 : 30,539.70 = 8,672.04 : x
  2. Step 2: Convert to fraction form
    20,358.72/30,539.70 = 8,672.04/x
  3. Step 3: Cross multiply
    20,358.72x = 30,539.70 × 8,672.04
  4. Step 4: Simplify right side
    20,358.72x = 264,841,499.99
  5. Step 5: Solve for x
    x = 264,841,499.99/20,358.72
  6. Step 6: Final answer
    x = 13,008.75

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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.