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Finding the Fourth Proportional to 9,949.80, 14,903.10 and 8,855.40

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Solution

The fourth proportional to 9,949.80, 14,903.10 and 8,855.40 is: 13,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,949.80 : 14,903.10 = 8,855.40 : x
  2. Step 2: Convert to fraction form
    9,949.80/14,903.10 = 8,855.40/x
  3. Step 3: Cross multiply
    9,949.80x = 14,903.10 × 8,855.40
  4. Step 4: Simplify right side
    9,949.80x = 131,972,911.74
  5. Step 5: Solve for x
    x = 131,972,911.74/9,949.80
  6. Step 6: Final answer
    x = 13,263.88

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1.5x scale

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.