Home / 21,132.52-29,162.62-11,572.31

Finding the Fourth Proportional to 21,132.52, 29,162.62 and 11,572.31

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Solution

The fourth proportional to 21,132.52, 29,162.62 and 11,572.31 is: 15,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.52 : 29,162.62 = 11,572.31 : x
  2. Step 2: Convert to fraction form
    21,132.52/29,162.62 = 11,572.31/x
  3. Step 3: Cross multiply
    21,132.52x = 29,162.62 × 11,572.31
  4. Step 4: Simplify right side
    21,132.52x = 337,478,879.05
  5. Step 5: Solve for x
    x = 337,478,879.05/21,132.52
  6. Step 6: Final answer
    x = 15,969.65

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Double scale
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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.