Home / 18,718.66-28,076.91-11,321.13

Finding the Fourth Proportional to 18,718.66, 28,076.91 and 11,321.13

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Solution

The fourth proportional to 18,718.66, 28,076.91 and 11,321.13 is: 16,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.66 : 28,076.91 = 11,321.13 : x
  2. Step 2: Convert to fraction form
    18,718.66/28,076.91 = 11,321.13/x
  3. Step 3: Cross multiply
    18,718.66x = 28,076.91 × 11,321.13
  4. Step 4: Simplify right side
    18,718.66x = 317,862,348.11
  5. Step 5: Solve for x
    x = 317,862,348.11/18,718.66
  6. Step 6: Final answer
    x = 16,981.04

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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.