Home / 19,689.83-27,170.89-11,190.76

Finding the Fourth Proportional to 19,689.83, 27,170.89 and 11,190.76

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Solution

The fourth proportional to 19,689.83, 27,170.89 and 11,190.76 is: 15,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.83 : 27,170.89 = 11,190.76 : x
  2. Step 2: Convert to fraction form
    19,689.83/27,170.89 = 11,190.76/x
  3. Step 3: Cross multiply
    19,689.83x = 27,170.89 × 11,190.76
  4. Step 4: Simplify right side
    19,689.83x = 304,062,876.02
  5. Step 5: Solve for x
    x = 304,062,876.02/19,689.83
  6. Step 6: Final answer
    x = 15,442.63

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Half scale
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Double scale
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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.