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Finding the Fourth Proportional to 9,910.80, 14,868.68 and 6,994.80

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Solution

The fourth proportional to 9,910.80, 14,868.68 and 6,994.80 is: 10,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,910.80 : 14,868.68 = 6,994.80 : x
  2. Step 2: Convert to fraction form
    9,910.80/14,868.68 = 6,994.80/x
  3. Step 3: Cross multiply
    9,910.80x = 14,868.68 × 6,994.80
  4. Step 4: Simplify right side
    9,910.80x = 104,003,442.86
  5. Step 5: Solve for x
    x = 104,003,442.86/9,910.80
  6. Step 6: Final answer
    x = 10,493.95

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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.