Home / 21,179.40-29,265.66-15,200.70

Finding the Fourth Proportional to 21,179.40, 29,265.66 and 15,200.70

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Solution

The fourth proportional to 21,179.40, 29,265.66 and 15,200.70 is: 21,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.40 : 29,265.66 = 15,200.70 : x
  2. Step 2: Convert to fraction form
    21,179.40/29,265.66 = 15,200.70/x
  3. Step 3: Cross multiply
    21,179.40x = 29,265.66 × 15,200.70
  4. Step 4: Simplify right side
    21,179.40x = 444,858,517.96
  5. Step 5: Solve for x
    x = 444,858,517.96/21,179.40
  6. Step 6: Final answer
    x = 21,004.30

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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.