Home / 27,981.30-41,979.18-10,451.28

Finding the Fourth Proportional to 27,981.30, 41,979.18 and 10,451.28

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Solution

The fourth proportional to 27,981.30, 41,979.18 and 10,451.28 is: 15,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.30 : 41,979.18 = 10,451.28 : x
  2. Step 2: Convert to fraction form
    27,981.30/41,979.18 = 10,451.28/x
  3. Step 3: Cross multiply
    27,981.30x = 41,979.18 × 10,451.28
  4. Step 4: Simplify right side
    27,981.30x = 438,736,164.35
  5. Step 5: Solve for x
    x = 438,736,164.35/27,981.30
  6. Step 6: Final answer
    x = 15,679.62

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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.