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Finding the Fourth Proportional to 21,939.68, 32,980.80 and 17,604.56

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Solution

The fourth proportional to 21,939.68, 32,980.80 and 17,604.56 is: 26,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.68 : 32,980.80 = 17,604.56 : x
  2. Step 2: Convert to fraction form
    21,939.68/32,980.80 = 17,604.56/x
  3. Step 3: Cross multiply
    21,939.68x = 32,980.80 × 17,604.56
  4. Step 4: Simplify right side
    21,939.68x = 580,612,472.45
  5. Step 5: Solve for x
    x = 580,612,472.45/21,939.68
  6. Step 6: Final answer
    x = 26,464.04

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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.