Home / 18,686.31-27,997.75-11,275.20

Finding the Fourth Proportional to 18,686.31, 27,997.75 and 11,275.20

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Solution

The fourth proportional to 18,686.31, 27,997.75 and 11,275.20 is: 16,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.31 : 27,997.75 = 11,275.20 : x
  2. Step 2: Convert to fraction form
    18,686.31/27,997.75 = 11,275.20/x
  3. Step 3: Cross multiply
    18,686.31x = 27,997.75 × 11,275.20
  4. Step 4: Simplify right side
    18,686.31x = 315,680,244.89
  5. Step 5: Solve for x
    x = 315,680,244.89/18,686.31
  6. Step 6: Final answer
    x = 16,893.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.