Home / 20,336.13-28,065.11-11,384.19

Finding the Fourth Proportional to 20,336.13, 28,065.11 and 11,384.19

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Solution

The fourth proportional to 20,336.13, 28,065.11 and 11,384.19 is: 15,710.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.13 : 28,065.11 = 11,384.19 : x
  2. Step 2: Convert to fraction form
    20,336.13/28,065.11 = 11,384.19/x
  3. Step 3: Cross multiply
    20,336.13x = 28,065.11 × 11,384.19
  4. Step 4: Simplify right side
    20,336.13x = 319,498,487.69
  5. Step 5: Solve for x
    x = 319,498,487.69/20,336.13
  6. Step 6: Final answer
    x = 15,710.88

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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.