Home / 12,520.08-18,761.76-6,966.72

Finding the Fourth Proportional to 12,520.08, 18,761.76 and 6,966.72

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Solution

The fourth proportional to 12,520.08, 18,761.76 and 6,966.72 is: 10,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.08 : 18,761.76 = 6,966.72 : x
  2. Step 2: Convert to fraction form
    12,520.08/18,761.76 = 6,966.72/x
  3. Step 3: Cross multiply
    12,520.08x = 18,761.76 × 6,966.72
  4. Step 4: Simplify right side
    12,520.08x = 130,707,928.63
  5. Step 5: Solve for x
    x = 130,707,928.63/12,520.08
  6. Step 6: Final answer
    x = 10,439.86

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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.