Home / 20,349.11-30,539.28-9,107.93

Finding the Fourth Proportional to 20,349.11, 30,539.28 and 9,107.93

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Solution

The fourth proportional to 20,349.11, 30,539.28 and 9,107.93 is: 13,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.11 : 30,539.28 = 9,107.93 : x
  2. Step 2: Convert to fraction form
    20,349.11/30,539.28 = 9,107.93/x
  3. Step 3: Cross multiply
    20,349.11x = 30,539.28 × 9,107.93
  4. Step 4: Simplify right side
    20,349.11x = 278,149,624.49
  5. Step 5: Solve for x
    x = 278,149,624.49/20,349.11
  6. Step 6: Final answer
    x = 13,668.88

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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.