Home / 18,011.34-27,015.12-8,521.38

Finding the Fourth Proportional to 18,011.34, 27,015.12 and 8,521.38

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Solution

The fourth proportional to 18,011.34, 27,015.12 and 8,521.38 is: 12,781.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,011.34 : 27,015.12 = 8,521.38 : x
  2. Step 2: Convert to fraction form
    18,011.34/27,015.12 = 8,521.38/x
  3. Step 3: Cross multiply
    18,011.34x = 27,015.12 × 8,521.38
  4. Step 4: Simplify right side
    18,011.34x = 230,206,103.27
  5. Step 5: Solve for x
    x = 230,206,103.27/18,011.34
  6. Step 6: Final answer
    x = 12,781.18

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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.