Home / 15,418.20-21,277.10-8,344.61

Finding the Fourth Proportional to 15,418.20, 21,277.10 and 8,344.61

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Solution

The fourth proportional to 15,418.20, 21,277.10 and 8,344.61 is: 11,515.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.20 : 21,277.10 = 8,344.61 : x
  2. Step 2: Convert to fraction form
    15,418.20/21,277.10 = 8,344.61/x
  3. Step 3: Cross multiply
    15,418.20x = 21,277.10 × 8,344.61
  4. Step 4: Simplify right side
    15,418.20x = 177,548,953.32
  5. Step 5: Solve for x
    x = 177,548,953.32/15,418.20
  6. Step 6: Final answer
    x = 11,515.54

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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.