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Finding the Fourth Proportional to 21,658.92, 32,489.54 and 6,868.96

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Solution

The fourth proportional to 21,658.92, 32,489.54 and 6,868.96 is: 10,303.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.92 : 32,489.54 = 6,868.96 : x
  2. Step 2: Convert to fraction form
    21,658.92/32,489.54 = 6,868.96/x
  3. Step 3: Cross multiply
    21,658.92x = 32,489.54 × 6,868.96
  4. Step 4: Simplify right side
    21,658.92x = 223,169,350.68
  5. Step 5: Solve for x
    x = 223,169,350.68/21,658.92
  6. Step 6: Final answer
    x = 10,303.81

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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.