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Finding the Fourth Proportional to 17,690.12, 26,535.06 and 5,378.12

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Solution

The fourth proportional to 17,690.12, 26,535.06 and 5,378.12 is: 8,067.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.12 : 26,535.06 = 5,378.12 : x
  2. Step 2: Convert to fraction form
    17,690.12/26,535.06 = 5,378.12/x
  3. Step 3: Cross multiply
    17,690.12x = 26,535.06 × 5,378.12
  4. Step 4: Simplify right side
    17,690.12x = 142,708,736.89
  5. Step 5: Solve for x
    x = 142,708,736.89/17,690.12
  6. Step 6: Final answer
    x = 8,067.14

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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.