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Finding the Fourth Proportional to 15,195.91, 22,815.06 and 7,805.47

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Solution

The fourth proportional to 15,195.91, 22,815.06 and 7,805.47 is: 11,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.91 : 22,815.06 = 7,805.47 : x
  2. Step 2: Convert to fraction form
    15,195.91/22,815.06 = 7,805.47/x
  3. Step 3: Cross multiply
    15,195.91x = 22,815.06 × 7,805.47
  4. Step 4: Simplify right side
    15,195.91x = 178,082,266.38
  5. Step 5: Solve for x
    x = 178,082,266.38/15,195.91
  6. Step 6: Final answer
    x = 11,719.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.