Home / 15,324.05-21,147.74-8,609.55

Finding the Fourth Proportional to 15,324.05, 21,147.74 and 8,609.55

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Solution

The fourth proportional to 15,324.05, 21,147.74 and 8,609.55 is: 11,881.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.05 : 21,147.74 = 8,609.55 : x
  2. Step 2: Convert to fraction form
    15,324.05/21,147.74 = 8,609.55/x
  3. Step 3: Cross multiply
    15,324.05x = 21,147.74 × 8,609.55
  4. Step 4: Simplify right side
    15,324.05x = 182,072,455.77
  5. Step 5: Solve for x
    x = 182,072,455.77/15,324.05
  6. Step 6: Final answer
    x = 11,881.48

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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.