Home / 15,316.62-21,149.46-9,660.48

Finding the Fourth Proportional to 15,316.62, 21,149.46 and 9,660.48

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Solution

The fourth proportional to 15,316.62, 21,149.46 and 9,660.48 is: 13,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.62 : 21,149.46 = 9,660.48 : x
  2. Step 2: Convert to fraction form
    15,316.62/21,149.46 = 9,660.48/x
  3. Step 3: Cross multiply
    15,316.62x = 21,149.46 × 9,660.48
  4. Step 4: Simplify right side
    15,316.62x = 204,313,935.34
  5. Step 5: Solve for x
    x = 204,313,935.34/15,316.62
  6. Step 6: Final answer
    x = 13,339.36

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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.