Home / 21,149.54-29,186.23-11,718.08

Finding the Fourth Proportional to 21,149.54, 29,186.23 and 11,718.08

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Solution

The fourth proportional to 21,149.54, 29,186.23 and 11,718.08 is: 16,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.54 : 29,186.23 = 11,718.08 : x
  2. Step 2: Convert to fraction form
    21,149.54/29,186.23 = 11,718.08/x
  3. Step 3: Cross multiply
    21,149.54x = 29,186.23 × 11,718.08
  4. Step 4: Simplify right side
    21,149.54x = 342,006,578.04
  5. Step 5: Solve for x
    x = 342,006,578.04/21,149.54
  6. Step 6: Final answer
    x = 16,170.88

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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.