Home / 15,151.23-20,908.51-8,436.68

Finding the Fourth Proportional to 15,151.23, 20,908.51 and 8,436.68

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Solution

The fourth proportional to 15,151.23, 20,908.51 and 8,436.68 is: 11,642.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.23 : 20,908.51 = 8,436.68 : x
  2. Step 2: Convert to fraction form
    15,151.23/20,908.51 = 8,436.68/x
  3. Step 3: Cross multiply
    15,151.23x = 20,908.51 × 8,436.68
  4. Step 4: Simplify right side
    15,151.23x = 176,398,408.15
  5. Step 5: Solve for x
    x = 176,398,408.15/15,151.23
  6. Step 6: Final answer
    x = 11,642.51

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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.