Home / 21,564.60-29,757.90-12,132.60

Finding the Fourth Proportional to 21,564.60, 29,757.90 and 12,132.60

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Solution

The fourth proportional to 21,564.60, 29,757.90 and 12,132.60 is: 16,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.60 : 29,757.90 = 12,132.60 : x
  2. Step 2: Convert to fraction form
    21,564.60/29,757.90 = 12,132.60/x
  3. Step 3: Cross multiply
    21,564.60x = 29,757.90 × 12,132.60
  4. Step 4: Simplify right side
    21,564.60x = 361,040,697.54
  5. Step 5: Solve for x
    x = 361,040,697.54/21,564.60
  6. Step 6: Final answer
    x = 16,742.29

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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.