Home / 20,397.22-28,147.91-11,444.69

Finding the Fourth Proportional to 20,397.22, 28,147.91 and 11,444.69

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Solution

The fourth proportional to 20,397.22, 28,147.91 and 11,444.69 is: 15,793.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.22 : 28,147.91 = 11,444.69 : x
  2. Step 2: Convert to fraction form
    20,397.22/28,147.91 = 11,444.69/x
  3. Step 3: Cross multiply
    20,397.22x = 28,147.91 × 11,444.69
  4. Step 4: Simplify right side
    20,397.22x = 322,144,117.24
  5. Step 5: Solve for x
    x = 322,144,117.24/20,397.22
  6. Step 6: Final answer
    x = 15,793.53

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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.