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Finding the Fourth Proportional to 18,280.92, 25,226.97 and 10,215

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Solution

The fourth proportional to 18,280.92, 25,226.97 and 10,215 is: 14,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.92 : 25,226.97 = 10,215 : x
  2. Step 2: Convert to fraction form
    18,280.92/25,226.97 = 10,215/x
  3. Step 3: Cross multiply
    18,280.92x = 25,226.97 × 10,215
  4. Step 4: Simplify right side
    18,280.92x = 257,693,498.55
  5. Step 5: Solve for x
    x = 257,693,498.55/18,280.92
  6. Step 6: Final answer
    x = 14,096.31

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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.