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Finding the Fourth Proportional to 9,935.10, 14,902.65 and 8,811.90

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Solution

The fourth proportional to 9,935.10, 14,902.65 and 8,811.90 is: 13,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,935.10 : 14,902.65 = 8,811.90 : x
  2. Step 2: Convert to fraction form
    9,935.10/14,902.65 = 8,811.90/x
  3. Step 3: Cross multiply
    9,935.10x = 14,902.65 × 8,811.90
  4. Step 4: Simplify right side
    9,935.10x = 131,320,661.54
  5. Step 5: Solve for x
    x = 131,320,661.54/9,935.10
  6. Step 6: Final answer
    x = 13,217.85

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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.