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Finding the Fourth Proportional to 12,754.86, 19,132.65 and 3,520.86

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Solution

The fourth proportional to 12,754.86, 19,132.65 and 3,520.86 is: 5,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,754.86 : 19,132.65 = 3,520.86 : x
  2. Step 2: Convert to fraction form
    12,754.86/19,132.65 = 3,520.86/x
  3. Step 3: Cross multiply
    12,754.86x = 19,132.65 × 3,520.86
  4. Step 4: Simplify right side
    12,754.86x = 67,363,382.08
  5. Step 5: Solve for x
    x = 67,363,382.08/12,754.86
  6. Step 6: Final answer
    x = 5,281.39

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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.