Home / 27,617.20-38,112.69-15,680.14

Finding the Fourth Proportional to 27,617.20, 38,112.69 and 15,680.14

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Solution

The fourth proportional to 27,617.20, 38,112.69 and 15,680.14 is: 21,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,617.20 : 38,112.69 = 15,680.14 : x
  2. Step 2: Convert to fraction form
    27,617.20/38,112.69 = 15,680.14/x
  3. Step 3: Cross multiply
    27,617.20x = 38,112.69 × 15,680.14
  4. Step 4: Simplify right side
    27,617.20x = 597,612,314.98
  5. Step 5: Solve for x
    x = 597,612,314.98/27,617.20
  6. Step 6: Final answer
    x = 21,639.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.