Home / 27,855.16-38,470.44-18,917.62

Finding the Fourth Proportional to 27,855.16, 38,470.44 and 18,917.62

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Solution

The fourth proportional to 27,855.16, 38,470.44 and 18,917.62 is: 26,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.16 : 38,470.44 = 18,917.62 : x
  2. Step 2: Convert to fraction form
    27,855.16/38,470.44 = 18,917.62/x
  3. Step 3: Cross multiply
    27,855.16x = 38,470.44 × 18,917.62
  4. Step 4: Simplify right side
    27,855.16x = 727,769,139.92
  5. Step 5: Solve for x
    x = 727,769,139.92/27,855.16
  6. Step 6: Final answer
    x = 26,126.91

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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.