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Finding the Fourth Proportional to 12,575.65, 18,862.01 and 4,255.65

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Solution

The fourth proportional to 12,575.65, 18,862.01 and 4,255.65 is: 6,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.65 : 18,862.01 = 4,255.65 : x
  2. Step 2: Convert to fraction form
    12,575.65/18,862.01 = 4,255.65/x
  3. Step 3: Cross multiply
    12,575.65x = 18,862.01 × 4,255.65
  4. Step 4: Simplify right side
    12,575.65x = 80,270,112.86
  5. Step 5: Solve for x
    x = 80,270,112.86/12,575.65
  6. Step 6: Final answer
    x = 6,382.98

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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.