Home / 20,209.43-27,889.31-11,712.18

Finding the Fourth Proportional to 20,209.43, 27,889.31 and 11,712.18

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Solution

The fourth proportional to 20,209.43, 27,889.31 and 11,712.18 is: 16,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.43 : 27,889.31 = 11,712.18 : x
  2. Step 2: Convert to fraction form
    20,209.43/27,889.31 = 11,712.18/x
  3. Step 3: Cross multiply
    20,209.43x = 27,889.31 × 11,712.18
  4. Step 4: Simplify right side
    20,209.43x = 326,644,560.23
  5. Step 5: Solve for x
    x = 326,644,560.23/20,209.43
  6. Step 6: Final answer
    x = 16,162.98

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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.