Home / 20,116.80-30,155.76-6,959.28

Finding the Fourth Proportional to 20,116.80, 30,155.76 and 6,959.28

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Solution

The fourth proportional to 20,116.80, 30,155.76 and 6,959.28 is: 10,432.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.80 : 30,155.76 = 6,959.28 : x
  2. Step 2: Convert to fraction form
    20,116.80/30,155.76 = 6,959.28/x
  3. Step 3: Cross multiply
    20,116.80x = 30,155.76 × 6,959.28
  4. Step 4: Simplify right side
    20,116.80x = 209,862,377.45
  5. Step 5: Solve for x
    x = 209,862,377.45/20,116.80
  6. Step 6: Final answer
    x = 10,432.19

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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.