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Finding the Fourth Proportional to 18,238.33, 27,338.65 and 6,990.58

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Solution

The fourth proportional to 18,238.33, 27,338.65 and 6,990.58 is: 10,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.33 : 27,338.65 = 6,990.58 : x
  2. Step 2: Convert to fraction form
    18,238.33/27,338.65 = 6,990.58/x
  3. Step 3: Cross multiply
    18,238.33x = 27,338.65 × 6,990.58
  4. Step 4: Simplify right side
    18,238.33x = 191,113,019.92
  5. Step 5: Solve for x
    x = 191,113,019.92/18,238.33
  6. Step 6: Final answer
    x = 10,478.65

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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.