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Finding the Fourth Proportional to 20,063.28, 30,061.92 and 8,953.28

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Solution

The fourth proportional to 20,063.28, 30,061.92 and 8,953.28 is: 13,415.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.28 : 30,061.92 = 8,953.28 : x
  2. Step 2: Convert to fraction form
    20,063.28/30,061.92 = 8,953.28/x
  3. Step 3: Cross multiply
    20,063.28x = 30,061.92 × 8,953.28
  4. Step 4: Simplify right side
    20,063.28x = 269,152,787.10
  5. Step 5: Solve for x
    x = 269,152,787.10/20,063.28
  6. Step 6: Final answer
    x = 13,415.19

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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.