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Finding the Fourth Proportional to 17,626.40, 26,439.60 and 13,479.20

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Solution

The fourth proportional to 17,626.40, 26,439.60 and 13,479.20 is: 20,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,626.40 : 26,439.60 = 13,479.20 : x
  2. Step 2: Convert to fraction form
    17,626.40/26,439.60 = 13,479.20/x
  3. Step 3: Cross multiply
    17,626.40x = 26,439.60 × 13,479.20
  4. Step 4: Simplify right side
    17,626.40x = 356,384,656.32
  5. Step 5: Solve for x
    x = 356,384,656.32/17,626.40
  6. Step 6: Final answer
    x = 20,218.80

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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.