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Finding the Fourth Proportional to 18,227.80, 27,341.70 and 15,117.40

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Solution

The fourth proportional to 18,227.80, 27,341.70 and 15,117.40 is: 22,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.80 : 27,341.70 = 15,117.40 : x
  2. Step 2: Convert to fraction form
    18,227.80/27,341.70 = 15,117.40/x
  3. Step 3: Cross multiply
    18,227.80x = 27,341.70 × 15,117.40
  4. Step 4: Simplify right side
    18,227.80x = 413,335,415.58
  5. Step 5: Solve for x
    x = 413,335,415.58/18,227.80
  6. Step 6: Final answer
    x = 22,676.10

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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.