Home / 15,149.75-20,908.28-8,867.39

Finding the Fourth Proportional to 15,149.75, 20,908.28 and 8,867.39

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Solution

The fourth proportional to 15,149.75, 20,908.28 and 8,867.39 is: 12,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.75 : 20,908.28 = 8,867.39 : x
  2. Step 2: Convert to fraction form
    15,149.75/20,908.28 = 8,867.39/x
  3. Step 3: Cross multiply
    15,149.75x = 20,908.28 × 8,867.39
  4. Step 4: Simplify right side
    15,149.75x = 185,401,828.65
  5. Step 5: Solve for x
    x = 185,401,828.65/15,149.75
  6. Step 6: Final answer
    x = 12,237.95

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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.