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Finding the Fourth Proportional to 21,934.80, 32,902.20 and 8,089.20

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Solution

The fourth proportional to 21,934.80, 32,902.20 and 8,089.20 is: 12,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.80 : 32,902.20 = 8,089.20 : x
  2. Step 2: Convert to fraction form
    21,934.80/32,902.20 = 8,089.20/x
  3. Step 3: Cross multiply
    21,934.80x = 32,902.20 × 8,089.20
  4. Step 4: Simplify right side
    21,934.80x = 266,152,476.24
  5. Step 5: Solve for x
    x = 266,152,476.24/21,934.80
  6. Step 6: Final answer
    x = 12,133.80

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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.