Home / 12,418.29-17,124.39-8,645.76

Finding the Fourth Proportional to 12,418.29, 17,124.39 and 8,645.76

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Solution

The fourth proportional to 12,418.29, 17,124.39 and 8,645.76 is: 11,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.29 : 17,124.39 = 8,645.76 : x
  2. Step 2: Convert to fraction form
    12,418.29/17,124.39 = 8,645.76/x
  3. Step 3: Cross multiply
    12,418.29x = 17,124.39 × 8,645.76
  4. Step 4: Simplify right side
    12,418.29x = 148,053,366.09
  5. Step 5: Solve for x
    x = 148,053,366.09/12,418.29
  6. Step 6: Final answer
    x = 11,922.20

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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.