Home / 10,972.46-15,142.21-6,494.58

Finding the Fourth Proportional to 10,972.46, 15,142.21 and 6,494.58

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Solution

The fourth proportional to 10,972.46, 15,142.21 and 6,494.58 is: 8,962.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.46 : 15,142.21 = 6,494.58 : x
  2. Step 2: Convert to fraction form
    10,972.46/15,142.21 = 6,494.58/x
  3. Step 3: Cross multiply
    10,972.46x = 15,142.21 × 6,494.58
  4. Step 4: Simplify right side
    10,972.46x = 98,342,257.73
  5. Step 5: Solve for x
    x = 98,342,257.73/10,972.46
  6. Step 6: Final answer
    x = 8,962.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.