Home / 15,324.84-21,147.12-8,609.18

Finding the Fourth Proportional to 15,324.84, 21,147.12 and 8,609.18

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Solution

The fourth proportional to 15,324.84, 21,147.12 and 8,609.18 is: 11,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.84 : 21,147.12 = 8,609.18 : x
  2. Step 2: Convert to fraction form
    15,324.84/21,147.12 = 8,609.18/x
  3. Step 3: Cross multiply
    15,324.84x = 21,147.12 × 8,609.18
  4. Step 4: Simplify right side
    15,324.84x = 182,059,256.83
  5. Step 5: Solve for x
    x = 182,059,256.83/15,324.84
  6. Step 6: Final answer
    x = 11,880.01

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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.