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Finding the Fourth Proportional to 11,613.40, 17,335.07 and 9,980.44

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Solution

The fourth proportional to 11,613.40, 17,335.07 and 9,980.44 is: 14,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.40 : 17,335.07 = 9,980.44 : x
  2. Step 2: Convert to fraction form
    11,613.40/17,335.07 = 9,980.44/x
  3. Step 3: Cross multiply
    11,613.40x = 17,335.07 × 9,980.44
  4. Step 4: Simplify right side
    11,613.40x = 173,011,626.03
  5. Step 5: Solve for x
    x = 173,011,626.03/11,613.40
  6. Step 6: Final answer
    x = 14,897.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.