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Finding the Fourth Proportional to 21,932.48, 32,915.64 and 8,793.20

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Solution

The fourth proportional to 21,932.48, 32,915.64 and 8,793.20 is: 13,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.48 : 32,915.64 = 8,793.20 : x
  2. Step 2: Convert to fraction form
    21,932.48/32,915.64 = 8,793.20/x
  3. Step 3: Cross multiply
    21,932.48x = 32,915.64 × 8,793.20
  4. Step 4: Simplify right side
    21,932.48x = 289,433,805.65
  5. Step 5: Solve for x
    x = 289,433,805.65/21,932.48
  6. Step 6: Final answer
    x = 13,196.58

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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.