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Finding the Fourth Proportional to 18,880.92, 28,301.94 and 10,113.48

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Solution

The fourth proportional to 18,880.92, 28,301.94 and 10,113.48 is: 15,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.92 : 28,301.94 = 10,113.48 : x
  2. Step 2: Convert to fraction form
    18,880.92/28,301.94 = 10,113.48/x
  3. Step 3: Cross multiply
    18,880.92x = 28,301.94 × 10,113.48
  4. Step 4: Simplify right side
    18,880.92x = 286,231,104.15
  5. Step 5: Solve for x
    x = 286,231,104.15/18,880.92
  6. Step 6: Final answer
    x = 15,159.81

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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.