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Finding the Fourth Proportional to 14,481.38, 19,985.74 and 8,816.45

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Solution

The fourth proportional to 14,481.38, 19,985.74 and 8,816.45 is: 12,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,481.38 : 19,985.74 = 8,816.45 : x
  2. Step 2: Convert to fraction form
    14,481.38/19,985.74 = 8,816.45/x
  3. Step 3: Cross multiply
    14,481.38x = 19,985.74 × 8,816.45
  4. Step 4: Simplify right side
    14,481.38x = 176,203,155.45
  5. Step 5: Solve for x
    x = 176,203,155.45/14,481.38
  6. Step 6: Final answer
    x = 12,167.56

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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.