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Finding the Fourth Proportional to 14,772.88, 20,389.20 and 8,808

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Solution

The fourth proportional to 14,772.88, 20,389.20 and 8,808 is: 12,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.88 : 20,389.20 = 8,808 : x
  2. Step 2: Convert to fraction form
    14,772.88/20,389.20 = 8,808/x
  3. Step 3: Cross multiply
    14,772.88x = 20,389.20 × 8,808
  4. Step 4: Simplify right side
    14,772.88x = 179,588,073.60
  5. Step 5: Solve for x
    x = 179,588,073.60/14,772.88
  6. Step 6: Final answer
    x = 12,156.61

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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.