Home / 27,115.15-40,619.76-18,680.17

Finding the Fourth Proportional to 27,115.15, 40,619.76 and 18,680.17

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Solution

The fourth proportional to 27,115.15, 40,619.76 and 18,680.17 is: 27,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,115.15 : 40,619.76 = 18,680.17 : x
  2. Step 2: Convert to fraction form
    27,115.15/40,619.76 = 18,680.17/x
  3. Step 3: Cross multiply
    27,115.15x = 40,619.76 × 18,680.17
  4. Step 4: Simplify right side
    27,115.15x = 758,784,022.16
  5. Step 5: Solve for x
    x = 758,784,022.16/27,115.15
  6. Step 6: Final answer
    x = 27,983.77

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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.