Home / 15,151.16-20,909.22-8,436.37

Finding the Fourth Proportional to 15,151.16, 20,909.22 and 8,436.37

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Solution

The fourth proportional to 15,151.16, 20,909.22 and 8,436.37 is: 11,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.16 : 20,909.22 = 8,436.37 : x
  2. Step 2: Convert to fraction form
    15,151.16/20,909.22 = 8,436.37/x
  3. Step 3: Cross multiply
    15,151.16x = 20,909.22 × 8,436.37
  4. Step 4: Simplify right side
    15,151.16x = 176,397,811.79
  5. Step 5: Solve for x
    x = 176,397,811.79/15,151.16
  6. Step 6: Final answer
    x = 11,642.53

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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.