Home / 19,419.20-29,108.60-13,179.72

Finding the Fourth Proportional to 19,419.20, 29,108.60 and 13,179.72

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Solution

The fourth proportional to 19,419.20, 29,108.60 and 13,179.72 is: 19,755.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.20 : 29,108.60 = 13,179.72 : x
  2. Step 2: Convert to fraction form
    19,419.20/29,108.60 = 13,179.72/x
  3. Step 3: Cross multiply
    19,419.20x = 29,108.60 × 13,179.72
  4. Step 4: Simplify right side
    19,419.20x = 383,643,126.54
  5. Step 5: Solve for x
    x = 383,643,126.54/19,419.20
  6. Step 6: Final answer
    x = 19,755.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.