Home / 13,726.66-18,944.82-8,691.35

Finding the Fourth Proportional to 13,726.66, 18,944.82 and 8,691.35

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Solution

The fourth proportional to 13,726.66, 18,944.82 and 8,691.35 is: 11,995.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.66 : 18,944.82 = 8,691.35 : x
  2. Step 2: Convert to fraction form
    13,726.66/18,944.82 = 8,691.35/x
  3. Step 3: Cross multiply
    13,726.66x = 18,944.82 × 8,691.35
  4. Step 4: Simplify right side
    13,726.66x = 164,655,966.58
  5. Step 5: Solve for x
    x = 164,655,966.58/13,726.66
  6. Step 6: Final answer
    x = 11,995.35

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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.