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Finding the Fourth Proportional to 18,586.35, 27,870.30 and 6,739.65

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Solution

The fourth proportional to 18,586.35, 27,870.30 and 6,739.65 is: 10,106.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.35 : 27,870.30 = 6,739.65 : x
  2. Step 2: Convert to fraction form
    18,586.35/27,870.30 = 6,739.65/x
  3. Step 3: Cross multiply
    18,586.35x = 27,870.30 × 6,739.65
  4. Step 4: Simplify right side
    18,586.35x = 187,836,067.40
  5. Step 5: Solve for x
    x = 187,836,067.40/18,586.35
  6. Step 6: Final answer
    x = 10,106.13

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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.