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Finding the Fourth Proportional to 12,613.56, 17,406.55 and 6,948.19

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Solution

The fourth proportional to 12,613.56, 17,406.55 and 6,948.19 is: 9,588.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.56 : 17,406.55 = 6,948.19 : x
  2. Step 2: Convert to fraction form
    12,613.56/17,406.55 = 6,948.19/x
  3. Step 3: Cross multiply
    12,613.56x = 17,406.55 × 6,948.19
  4. Step 4: Simplify right side
    12,613.56x = 120,944,016.64
  5. Step 5: Solve for x
    x = 120,944,016.64/12,613.56
  6. Step 6: Final answer
    x = 9,588.41

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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.