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Finding the Fourth Proportional to 21,952.40, 32,920.38 and 6,957.78

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Solution

The fourth proportional to 21,952.40, 32,920.38 and 6,957.78 is: 10,434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.40 : 32,920.38 = 6,957.78 : x
  2. Step 2: Convert to fraction form
    21,952.40/32,920.38 = 6,957.78/x
  3. Step 3: Cross multiply
    21,952.40x = 32,920.38 × 6,957.78
  4. Step 4: Simplify right side
    21,952.40x = 229,052,761.56
  5. Step 5: Solve for x
    x = 229,052,761.56/21,952.40
  6. Step 6: Final answer
    x = 10,434.06

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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.