Home / 13,380.86-20,023.88-9,862.56

Finding the Fourth Proportional to 13,380.86, 20,023.88 and 9,862.56

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Solution

The fourth proportional to 13,380.86, 20,023.88 and 9,862.56 is: 14,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.86 : 20,023.88 = 9,862.56 : x
  2. Step 2: Convert to fraction form
    13,380.86/20,023.88 = 9,862.56/x
  3. Step 3: Cross multiply
    13,380.86x = 20,023.88 × 9,862.56
  4. Step 4: Simplify right side
    13,380.86x = 197,486,668.62
  5. Step 5: Solve for x
    x = 197,486,668.62/13,380.86
  6. Step 6: Final answer
    x = 14,758.89

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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.