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Finding the Fourth Proportional to 18,295.72, 25,248.08 and 9,912.22

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Solution

The fourth proportional to 18,295.72, 25,248.08 and 9,912.22 is: 13,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.72 : 25,248.08 = 9,912.22 : x
  2. Step 2: Convert to fraction form
    18,295.72/25,248.08 = 9,912.22/x
  3. Step 3: Cross multiply
    18,295.72x = 25,248.08 × 9,912.22
  4. Step 4: Simplify right side
    18,295.72x = 250,264,523.54
  5. Step 5: Solve for x
    x = 250,264,523.54/18,295.72
  6. Step 6: Final answer
    x = 13,678.86

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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.