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Finding the Fourth Proportional to 17,003.80, 25,502.01 and 5,315.50

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Solution

The fourth proportional to 17,003.80, 25,502.01 and 5,315.50 is: 7,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,003.80 : 25,502.01 = 5,315.50 : x
  2. Step 2: Convert to fraction form
    17,003.80/25,502.01 = 5,315.50/x
  3. Step 3: Cross multiply
    17,003.80x = 25,502.01 × 5,315.50
  4. Step 4: Simplify right side
    17,003.80x = 135,555,934.16
  5. Step 5: Solve for x
    x = 135,555,934.16/17,003.80
  6. Step 6: Final answer
    x = 7,972.10

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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.