Home / 15,151.35-20,908.92-8,436.96

Finding the Fourth Proportional to 15,151.35, 20,908.92 and 8,436.96

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Solution

The fourth proportional to 15,151.35, 20,908.92 and 8,436.96 is: 11,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.35 : 20,908.92 = 8,436.96 : x
  2. Step 2: Convert to fraction form
    15,151.35/20,908.92 = 8,436.96/x
  3. Step 3: Cross multiply
    15,151.35x = 20,908.92 × 8,436.96
  4. Step 4: Simplify right side
    15,151.35x = 176,407,721.68
  5. Step 5: Solve for x
    x = 176,407,721.68/15,151.35
  6. Step 6: Final answer
    x = 11,643.04

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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.