Home / 12,631.57-17,431.70-6,966.55

Finding the Fourth Proportional to 12,631.57, 17,431.70 and 6,966.55

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Solution

The fourth proportional to 12,631.57, 17,431.70 and 6,966.55 is: 9,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.57 : 17,431.70 = 6,966.55 : x
  2. Step 2: Convert to fraction form
    12,631.57/17,431.70 = 6,966.55/x
  3. Step 3: Cross multiply
    12,631.57x = 17,431.70 × 6,966.55
  4. Step 4: Simplify right side
    12,631.57x = 121,438,809.64
  5. Step 5: Solve for x
    x = 121,438,809.64/12,631.57
  6. Step 6: Final answer
    x = 9,613.91

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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.