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Finding the Fourth Proportional to 17,758.44, 26,642.98 and 5,278.88

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Solution

The fourth proportional to 17,758.44, 26,642.98 and 5,278.88 is: 7,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,758.44 : 26,642.98 = 5,278.88 : x
  2. Step 2: Convert to fraction form
    17,758.44/26,642.98 = 5,278.88/x
  3. Step 3: Cross multiply
    17,758.44x = 26,642.98 × 5,278.88
  4. Step 4: Simplify right side
    17,758.44x = 140,645,094.26
  5. Step 5: Solve for x
    x = 140,645,094.26/17,758.44
  6. Step 6: Final answer
    x = 7,919.90

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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.