Home / 20,211.16-27,891.39-11,718.22

Finding the Fourth Proportional to 20,211.16, 27,891.39 and 11,718.22

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Solution

The fourth proportional to 20,211.16, 27,891.39 and 11,718.22 is: 16,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.16 : 27,891.39 = 11,718.22 : x
  2. Step 2: Convert to fraction form
    20,211.16/27,891.39 = 11,718.22/x
  3. Step 3: Cross multiply
    20,211.16x = 27,891.39 × 11,718.22
  4. Step 4: Simplify right side
    20,211.16x = 326,837,444.13
  5. Step 5: Solve for x
    x = 326,837,444.13/20,211.16
  6. Step 6: Final answer
    x = 16,171.14

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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.