Home / 18,278.71-27,402.04-8,786.28

Finding the Fourth Proportional to 18,278.71, 27,402.04 and 8,786.28

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Solution

The fourth proportional to 18,278.71, 27,402.04 and 8,786.28 is: 13,171.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.71 : 27,402.04 = 8,786.28 : x
  2. Step 2: Convert to fraction form
    18,278.71/27,402.04 = 8,786.28/x
  3. Step 3: Cross multiply
    18,278.71x = 27,402.04 × 8,786.28
  4. Step 4: Simplify right side
    18,278.71x = 240,761,996.01
  5. Step 5: Solve for x
    x = 240,761,996.01/18,278.71
  6. Step 6: Final answer
    x = 13,171.72

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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.