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Finding the Fourth Proportional to 14,802.78, 20,418.29 and 8,829.84

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Solution

The fourth proportional to 14,802.78, 20,418.29 and 8,829.84 is: 12,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,802.78 : 20,418.29 = 8,829.84 : x
  2. Step 2: Convert to fraction form
    14,802.78/20,418.29 = 8,829.84/x
  3. Step 3: Cross multiply
    14,802.78x = 20,418.29 × 8,829.84
  4. Step 4: Simplify right side
    14,802.78x = 180,290,348.97
  5. Step 5: Solve for x
    x = 180,290,348.97/14,802.78
  6. Step 6: Final answer
    x = 12,179.49

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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.