Home / 15,323.49-21,146.43-8,609.12

Finding the Fourth Proportional to 15,323.49, 21,146.43 and 8,609.12

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Solution

The fourth proportional to 15,323.49, 21,146.43 and 8,609.12 is: 11,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.49 : 21,146.43 = 8,609.12 : x
  2. Step 2: Convert to fraction form
    15,323.49/21,146.43 = 8,609.12/x
  3. Step 3: Cross multiply
    15,323.49x = 21,146.43 × 8,609.12
  4. Step 4: Simplify right side
    15,323.49x = 182,052,153.44
  5. Step 5: Solve for x
    x = 182,052,153.44/15,323.49
  6. Step 6: Final answer
    x = 11,880.59

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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.