Home / 20,425.65-30,634.82-5,432.85

Finding the Fourth Proportional to 20,425.65, 30,634.82 and 5,432.85

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Solution

The fourth proportional to 20,425.65, 30,634.82 and 5,432.85 is: 8,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.65 : 30,634.82 = 5,432.85 : x
  2. Step 2: Convert to fraction form
    20,425.65/30,634.82 = 5,432.85/x
  3. Step 3: Cross multiply
    20,425.65x = 30,634.82 × 5,432.85
  4. Step 4: Simplify right side
    20,425.65x = 166,434,381.84
  5. Step 5: Solve for x
    x = 166,434,381.84/20,425.65
  6. Step 6: Final answer
    x = 8,148.30

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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.