Home / 20,350.23-28,080.03-11,397.70

Finding the Fourth Proportional to 20,350.23, 28,080.03 and 11,397.70

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Solution

The fourth proportional to 20,350.23, 28,080.03 and 11,397.70 is: 15,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.23 : 28,080.03 = 11,397.70 : x
  2. Step 2: Convert to fraction form
    20,350.23/28,080.03 = 11,397.70/x
  3. Step 3: Cross multiply
    20,350.23x = 28,080.03 × 11,397.70
  4. Step 4: Simplify right side
    20,350.23x = 320,047,757.93
  5. Step 5: Solve for x
    x = 320,047,757.93/20,350.23
  6. Step 6: Final answer
    x = 15,726.98

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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.