Home / 20,393.92-28,141.15-11,319.24

Finding the Fourth Proportional to 20,393.92, 28,141.15 and 11,319.24

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Solution

The fourth proportional to 20,393.92, 28,141.15 and 11,319.24 is: 15,619.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.92 : 28,141.15 = 11,319.24 : x
  2. Step 2: Convert to fraction form
    20,393.92/28,141.15 = 11,319.24/x
  3. Step 3: Cross multiply
    20,393.92x = 28,141.15 × 11,319.24
  4. Step 4: Simplify right side
    20,393.92x = 318,536,430.73
  5. Step 5: Solve for x
    x = 318,536,430.73/20,393.92
  6. Step 6: Final answer
    x = 15,619.19

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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.