Home / 18,001.43-27,001.13-5,521.41

Finding the Fourth Proportional to 18,001.43, 27,001.13 and 5,521.41

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Solution

The fourth proportional to 18,001.43, 27,001.13 and 5,521.41 is: 8,281.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,001.43 : 27,001.13 = 5,521.41 : x
  2. Step 2: Convert to fraction form
    18,001.43/27,001.13 = 5,521.41/x
  3. Step 3: Cross multiply
    18,001.43x = 27,001.13 × 5,521.41
  4. Step 4: Simplify right side
    18,001.43x = 149,084,382.84
  5. Step 5: Solve for x
    x = 149,084,382.84/18,001.43
  6. Step 6: Final answer
    x = 8,281.81

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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.