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Finding the Fourth Proportional to 21,775.01, 32,660.69 and 6,979.95

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Solution

The fourth proportional to 21,775.01, 32,660.69 and 6,979.95 is: 10,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.01 : 32,660.69 = 6,979.95 : x
  2. Step 2: Convert to fraction form
    21,775.01/32,660.69 = 6,979.95/x
  3. Step 3: Cross multiply
    21,775.01x = 32,660.69 × 6,979.95
  4. Step 4: Simplify right side
    21,775.01x = 227,969,948.27
  5. Step 5: Solve for x
    x = 227,969,948.27/21,775.01
  6. Step 6: Final answer
    x = 10,469.34

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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.