Home / 34,139.20-51,250.40-21,659.20

Finding the Fourth Proportional to 34,139.20, 51,250.40 and 21,659.20

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Solution

The fourth proportional to 34,139.20, 51,250.40 and 21,659.20 is: 32,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,139.20 : 51,250.40 = 21,659.20 : x
  2. Step 2: Convert to fraction form
    34,139.20/51,250.40 = 21,659.20/x
  3. Step 3: Cross multiply
    34,139.20x = 51,250.40 × 21,659.20
  4. Step 4: Simplify right side
    34,139.20x = 1,110,042,663.68
  5. Step 5: Solve for x
    x = 1,110,042,663.68/34,139.20
  6. Step 6: Final answer
    x = 32,515.19

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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.