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Finding the Fourth Proportional to 12,555.52, 17,325.84 and 6,966.88

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Solution

The fourth proportional to 12,555.52, 17,325.84 and 6,966.88 is: 9,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.52 : 17,325.84 = 6,966.88 : x
  2. Step 2: Convert to fraction form
    12,555.52/17,325.84 = 6,966.88/x
  3. Step 3: Cross multiply
    12,555.52x = 17,325.84 × 6,966.88
  4. Step 4: Simplify right side
    12,555.52x = 120,707,048.18
  5. Step 5: Solve for x
    x = 120,707,048.18/12,555.52
  6. Step 6: Final answer
    x = 9,613.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.