Home / 12,586.38-18,867.76-4,260.57

Finding the Fourth Proportional to 12,586.38, 18,867.76 and 4,260.57

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Solution

The fourth proportional to 12,586.38, 18,867.76 and 4,260.57 is: 6,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.38 : 18,867.76 = 4,260.57 : x
  2. Step 2: Convert to fraction form
    12,586.38/18,867.76 = 4,260.57/x
  3. Step 3: Cross multiply
    12,586.38x = 18,867.76 × 4,260.57
  4. Step 4: Simplify right side
    12,586.38x = 80,387,412.22
  5. Step 5: Solve for x
    x = 80,387,412.22/12,586.38
  6. Step 6: Final answer
    x = 6,386.86

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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.