Home / 20,544.48-28,321.92-13,818.24

Finding the Fourth Proportional to 20,544.48, 28,321.92 and 13,818.24

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Solution

The fourth proportional to 20,544.48, 28,321.92 and 13,818.24 is: 19,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.48 : 28,321.92 = 13,818.24 : x
  2. Step 2: Convert to fraction form
    20,544.48/28,321.92 = 13,818.24/x
  3. Step 3: Cross multiply
    20,544.48x = 28,321.92 × 13,818.24
  4. Step 4: Simplify right side
    20,544.48x = 391,359,087.82
  5. Step 5: Solve for x
    x = 391,359,087.82/20,544.48
  6. Step 6: Final answer
    x = 19,049.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.