Home / 20,306.70-30,426.30-19,538.82

Finding the Fourth Proportional to 20,306.70, 30,426.30 and 19,538.82

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Solution

The fourth proportional to 20,306.70, 30,426.30 and 19,538.82 is: 29,275.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.70 : 30,426.30 = 19,538.82 : x
  2. Step 2: Convert to fraction form
    20,306.70/30,426.30 = 19,538.82/x
  3. Step 3: Cross multiply
    20,306.70x = 30,426.30 × 19,538.82
  4. Step 4: Simplify right side
    20,306.70x = 594,493,998.97
  5. Step 5: Solve for x
    x = 594,493,998.97/20,306.70
  6. Step 6: Final answer
    x = 29,275.76

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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.