Home / 21,132.60-29,160.18-11,699.88

Finding the Fourth Proportional to 21,132.60, 29,160.18 and 11,699.88

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Solution

The fourth proportional to 21,132.60, 29,160.18 and 11,699.88 is: 16,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.60 : 29,160.18 = 11,699.88 : x
  2. Step 2: Convert to fraction form
    21,132.60/29,160.18 = 11,699.88/x
  3. Step 3: Cross multiply
    21,132.60x = 29,160.18 × 11,699.88
  4. Step 4: Simplify right side
    21,132.60x = 341,170,606.78
  5. Step 5: Solve for x
    x = 341,170,606.78/21,132.60
  6. Step 6: Final answer
    x = 16,144.28

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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.