Home / 21,132.60-29,161.42-11,570.39

Finding the Fourth Proportional to 21,132.60, 29,161.42 and 11,570.39

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Solution

The fourth proportional to 21,132.60, 29,161.42 and 11,570.39 is: 15,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.60 : 29,161.42 = 11,570.39 : x
  2. Step 2: Convert to fraction form
    21,132.60/29,161.42 = 11,570.39/x
  3. Step 3: Cross multiply
    21,132.60x = 29,161.42 × 11,570.39
  4. Step 4: Simplify right side
    21,132.60x = 337,409,101.01
  5. Step 5: Solve for x
    x = 337,409,101.01/21,132.60
  6. Step 6: Final answer
    x = 15,966.29

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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.