Home / 12,288.11-16,956.10-6,981.44

Finding the Fourth Proportional to 12,288.11, 16,956.10 and 6,981.44

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Solution

The fourth proportional to 12,288.11, 16,956.10 and 6,981.44 is: 9,633.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.11 : 16,956.10 = 6,981.44 : x
  2. Step 2: Convert to fraction form
    12,288.11/16,956.10 = 6,981.44/x
  3. Step 3: Cross multiply
    12,288.11x = 16,956.10 × 6,981.44
  4. Step 4: Simplify right side
    12,288.11x = 118,377,994.78
  5. Step 5: Solve for x
    x = 118,377,994.78/12,288.11
  6. Step 6: Final answer
    x = 9,633.54

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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.