Home / 15,436.38-21,302.30-8,362.80

Finding the Fourth Proportional to 15,436.38, 21,302.30 and 8,362.80

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Solution

The fourth proportional to 15,436.38, 21,302.30 and 8,362.80 is: 11,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.38 : 21,302.30 = 8,362.80 : x
  2. Step 2: Convert to fraction form
    15,436.38/21,302.30 = 8,362.80/x
  3. Step 3: Cross multiply
    15,436.38x = 21,302.30 × 8,362.80
  4. Step 4: Simplify right side
    15,436.38x = 178,146,874.44
  5. Step 5: Solve for x
    x = 178,146,874.44/15,436.38
  6. Step 6: Final answer
    x = 11,540.72

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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.