Home / 20,398.05-28,150.17-11,445.33

Finding the Fourth Proportional to 20,398.05, 28,150.17 and 11,445.33

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Solution

The fourth proportional to 20,398.05, 28,150.17 and 11,445.33 is: 15,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.05 : 28,150.17 = 11,445.33 : x
  2. Step 2: Convert to fraction form
    20,398.05/28,150.17 = 11,445.33/x
  3. Step 3: Cross multiply
    20,398.05x = 28,150.17 × 11,445.33
  4. Step 4: Simplify right side
    20,398.05x = 322,187,985.21
  5. Step 5: Solve for x
    x = 322,187,985.21/20,398.05
  6. Step 6: Final answer
    x = 15,795.04

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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.