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Finding the Fourth Proportional to 21,983.46, 32,951.97 and 7,188.42

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Solution

The fourth proportional to 21,983.46, 32,951.97 and 7,188.42 is: 10,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.46 : 32,951.97 = 7,188.42 : x
  2. Step 2: Convert to fraction form
    21,983.46/32,951.97 = 7,188.42/x
  3. Step 3: Cross multiply
    21,983.46x = 32,951.97 × 7,188.42
  4. Step 4: Simplify right side
    21,983.46x = 236,872,600.19
  5. Step 5: Solve for x
    x = 236,872,600.19/21,983.46
  6. Step 6: Final answer
    x = 10,775.04

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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.