Home / 15,394.74-21,244.97-8,680.69

Finding the Fourth Proportional to 15,394.74, 21,244.97 and 8,680.69

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Solution

The fourth proportional to 15,394.74, 21,244.97 and 8,680.69 is: 11,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.74 : 21,244.97 = 8,680.69 : x
  2. Step 2: Convert to fraction form
    15,394.74/21,244.97 = 8,680.69/x
  3. Step 3: Cross multiply
    15,394.74x = 21,244.97 × 8,680.69
  4. Step 4: Simplify right side
    15,394.74x = 184,420,998.63
  5. Step 5: Solve for x
    x = 184,420,998.63/15,394.74
  6. Step 6: Final answer
    x = 11,979.48

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Half scale
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Double scale
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Similar ratio
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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.