Home / 18,638.16-27,958.14-5,490.66

Finding the Fourth Proportional to 18,638.16, 27,958.14 and 5,490.66

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Solution

The fourth proportional to 18,638.16, 27,958.14 and 5,490.66 is: 8,236.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.16 : 27,958.14 = 5,490.66 : x
  2. Step 2: Convert to fraction form
    18,638.16/27,958.14 = 5,490.66/x
  3. Step 3: Cross multiply
    18,638.16x = 27,958.14 × 5,490.66
  4. Step 4: Simplify right side
    18,638.16x = 153,508,640.97
  5. Step 5: Solve for x
    x = 153,508,640.97/18,638.16
  6. Step 6: Final answer
    x = 8,236.26

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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.