Home / 13,917.15-20,853.45-11,129.13

Finding the Fourth Proportional to 13,917.15, 20,853.45 and 11,129.13

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Solution

The fourth proportional to 13,917.15, 20,853.45 and 11,129.13 is: 16,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.15 : 20,853.45 = 11,129.13 : x
  2. Step 2: Convert to fraction form
    13,917.15/20,853.45 = 11,129.13/x
  3. Step 3: Cross multiply
    13,917.15x = 20,853.45 × 11,129.13
  4. Step 4: Simplify right side
    13,917.15x = 232,080,756.00
  5. Step 5: Solve for x
    x = 232,080,756.00/13,917.15
  6. Step 6: Final answer
    x = 16,675.88

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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.