Home / 27,278.28-40,918.86-8,811.72

Finding the Fourth Proportional to 27,278.28, 40,918.86 and 8,811.72

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Solution

The fourth proportional to 27,278.28, 40,918.86 and 8,811.72 is: 13,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.28 : 40,918.86 = 8,811.72 : x
  2. Step 2: Convert to fraction form
    27,278.28/40,918.86 = 8,811.72/x
  3. Step 3: Cross multiply
    27,278.28x = 40,918.86 × 8,811.72
  4. Step 4: Simplify right side
    27,278.28x = 360,565,537.04
  5. Step 5: Solve for x
    x = 360,565,537.04/27,278.28
  6. Step 6: Final answer
    x = 13,218.05

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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.