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Finding the Fourth Proportional to 19,243.78, 28,842.08 and 10,930.79

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Solution

The fourth proportional to 19,243.78, 28,842.08 and 10,930.79 is: 16,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.78 : 28,842.08 = 10,930.79 : x
  2. Step 2: Convert to fraction form
    19,243.78/28,842.08 = 10,930.79/x
  3. Step 3: Cross multiply
    19,243.78x = 28,842.08 × 10,930.79
  4. Step 4: Simplify right side
    19,243.78x = 315,266,719.64
  5. Step 5: Solve for x
    x = 315,266,719.64/19,243.78
  6. Step 6: Final answer
    x = 16,382.79

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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.