Home / 20,398.86-28,150.24-11,446.36

Finding the Fourth Proportional to 20,398.86, 28,150.24 and 11,446.36

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Solution

The fourth proportional to 20,398.86, 28,150.24 and 11,446.36 is: 15,795.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.86 : 28,150.24 = 11,446.36 : x
  2. Step 2: Convert to fraction form
    20,398.86/28,150.24 = 11,446.36/x
  3. Step 3: Cross multiply
    20,398.86x = 28,150.24 × 11,446.36
  4. Step 4: Simplify right side
    20,398.86x = 322,217,781.13
  5. Step 5: Solve for x
    x = 322,217,781.13/20,398.86
  6. Step 6: Final answer
    x = 15,795.87

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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.