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Finding the Fourth Proportional to 17,178.40, 25,760.40 and 5,488.48

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Solution

The fourth proportional to 17,178.40, 25,760.40 and 5,488.48 is: 8,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,178.40 : 25,760.40 = 5,488.48 : x
  2. Step 2: Convert to fraction form
    17,178.40/25,760.40 = 5,488.48/x
  3. Step 3: Cross multiply
    17,178.40x = 25,760.40 × 5,488.48
  4. Step 4: Simplify right side
    17,178.40x = 141,385,440.19
  5. Step 5: Solve for x
    x = 141,385,440.19/17,178.40
  6. Step 6: Final answer
    x = 8,230.42

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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.