Home / 16,691.28-23,009.40-12,705.44

Finding the Fourth Proportional to 16,691.28, 23,009.40 and 12,705.44

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Solution

The fourth proportional to 16,691.28, 23,009.40 and 12,705.44 is: 17,514.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,691.28 : 23,009.40 = 12,705.44 : x
  2. Step 2: Convert to fraction form
    16,691.28/23,009.40 = 12,705.44/x
  3. Step 3: Cross multiply
    16,691.28x = 23,009.40 × 12,705.44
  4. Step 4: Simplify right side
    16,691.28x = 292,344,551.14
  5. Step 5: Solve for x
    x = 292,344,551.14/16,691.28
  6. Step 6: Final answer
    x = 17,514.81

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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.