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Finding the Fourth Proportional to 17,518.40, 26,234.40 and 11,643.20

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Solution

The fourth proportional to 17,518.40, 26,234.40 and 11,643.20 is: 17,436.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,518.40 : 26,234.40 = 11,643.20 : x
  2. Step 2: Convert to fraction form
    17,518.40/26,234.40 = 11,643.20/x
  3. Step 3: Cross multiply
    17,518.40x = 26,234.40 × 11,643.20
  4. Step 4: Simplify right side
    17,518.40x = 305,452,366.08
  5. Step 5: Solve for x
    x = 305,452,366.08/17,518.40
  6. Step 6: Final answer
    x = 17,436.09

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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.