Home / 20,215.71-27,895.17-11,262.57

Finding the Fourth Proportional to 20,215.71, 27,895.17 and 11,262.57

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Solution

The fourth proportional to 20,215.71, 27,895.17 and 11,262.57 is: 15,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.71 : 27,895.17 = 11,262.57 : x
  2. Step 2: Convert to fraction form
    20,215.71/27,895.17 = 11,262.57/x
  3. Step 3: Cross multiply
    20,215.71x = 27,895.17 × 11,262.57
  4. Step 4: Simplify right side
    20,215.71x = 314,171,304.79
  5. Step 5: Solve for x
    x = 314,171,304.79/20,215.71
  6. Step 6: Final answer
    x = 15,540.95

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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.