Home / 13,789.13-20,657.57-8,149.91

Finding the Fourth Proportional to 13,789.13, 20,657.57 and 8,149.91

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Solution

The fourth proportional to 13,789.13, 20,657.57 and 8,149.91 is: 12,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.13 : 20,657.57 = 8,149.91 : x
  2. Step 2: Convert to fraction form
    13,789.13/20,657.57 = 8,149.91/x
  3. Step 3: Cross multiply
    13,789.13x = 20,657.57 × 8,149.91
  4. Step 4: Simplify right side
    13,789.13x = 168,357,192.28
  5. Step 5: Solve for x
    x = 168,357,192.28/13,789.13
  6. Step 6: Final answer
    x = 12,209.42

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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.