Home / 12,419.38-17,138.85-6,754.18

Finding the Fourth Proportional to 12,419.38, 17,138.85 and 6,754.18

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Solution

The fourth proportional to 12,419.38, 17,138.85 and 6,754.18 is: 9,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.38 : 17,138.85 = 6,754.18 : x
  2. Step 2: Convert to fraction form
    12,419.38/17,138.85 = 6,754.18/x
  3. Step 3: Cross multiply
    12,419.38x = 17,138.85 × 6,754.18
  4. Step 4: Simplify right side
    12,419.38x = 115,758,809.08
  5. Step 5: Solve for x
    x = 115,758,809.08/12,419.38
  6. Step 6: Final answer
    x = 9,320.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.