Home / 19,671.40-27,143.46-11,286.28

Finding the Fourth Proportional to 19,671.40, 27,143.46 and 11,286.28

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Solution

The fourth proportional to 19,671.40, 27,143.46 and 11,286.28 is: 15,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.40 : 27,143.46 = 11,286.28 : x
  2. Step 2: Convert to fraction form
    19,671.40/27,143.46 = 11,286.28/x
  3. Step 3: Cross multiply
    19,671.40x = 27,143.46 × 11,286.28
  4. Step 4: Simplify right side
    19,671.40x = 306,348,689.73
  5. Step 5: Solve for x
    x = 306,348,689.73/19,671.40
  6. Step 6: Final answer
    x = 15,573.30

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Half scale
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Double scale
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Similar ratio
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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.