Home / 18,215.15-27,315.79-8,717.71

Finding the Fourth Proportional to 18,215.15, 27,315.79 and 8,717.71

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Solution

The fourth proportional to 18,215.15, 27,315.79 and 8,717.71 is: 13,073.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.15 : 27,315.79 = 8,717.71 : x
  2. Step 2: Convert to fraction form
    18,215.15/27,315.79 = 8,717.71/x
  3. Step 3: Cross multiply
    18,215.15x = 27,315.79 × 8,717.71
  4. Step 4: Simplify right side
    18,215.15x = 238,131,135.64
  5. Step 5: Solve for x
    x = 238,131,135.64/18,215.15
  6. Step 6: Final answer
    x = 13,073.25

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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.