Home / 20,414.28-30,497.40-12,959.04

Finding the Fourth Proportional to 20,414.28, 30,497.40 and 12,959.04

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Solution

The fourth proportional to 20,414.28, 30,497.40 and 12,959.04 is: 19,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.28 : 30,497.40 = 12,959.04 : x
  2. Step 2: Convert to fraction form
    20,414.28/30,497.40 = 12,959.04/x
  3. Step 3: Cross multiply
    20,414.28x = 30,497.40 × 12,959.04
  4. Step 4: Simplify right side
    20,414.28x = 395,217,026.50
  5. Step 5: Solve for x
    x = 395,217,026.50/20,414.28
  6. Step 6: Final answer
    x = 19,359.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.