Home / 11,868.38-16,377.89-6,490.70

Finding the Fourth Proportional to 11,868.38, 16,377.89 and 6,490.70

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Solution

The fourth proportional to 11,868.38, 16,377.89 and 6,490.70 is: 8,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.38 : 16,377.89 = 6,490.70 : x
  2. Step 2: Convert to fraction form
    11,868.38/16,377.89 = 6,490.70/x
  3. Step 3: Cross multiply
    11,868.38x = 16,377.89 × 6,490.70
  4. Step 4: Simplify right side
    11,868.38x = 106,303,856.28
  5. Step 5: Solve for x
    x = 106,303,856.28/11,868.38
  6. Step 6: Final answer
    x = 8,956.90

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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.