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Finding the Fourth Proportional to 18,538.15, 27,809.13 and 6,848.65

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Solution

The fourth proportional to 18,538.15, 27,809.13 and 6,848.65 is: 10,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.15 : 27,809.13 = 6,848.65 : x
  2. Step 2: Convert to fraction form
    18,538.15/27,809.13 = 6,848.65/x
  3. Step 3: Cross multiply
    18,538.15x = 27,809.13 × 6,848.65
  4. Step 4: Simplify right side
    18,538.15x = 190,454,998.17
  5. Step 5: Solve for x
    x = 190,454,998.17/18,538.15
  6. Step 6: Final answer
    x = 10,273.68

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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.