Home / 11,869.20-16,378.82-6,490.57

Finding the Fourth Proportional to 11,869.20, 16,378.82 and 6,490.57

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Solution

The fourth proportional to 11,869.20, 16,378.82 and 6,490.57 is: 8,956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.20 : 16,378.82 = 6,490.57 : x
  2. Step 2: Convert to fraction form
    11,869.20/16,378.82 = 6,490.57/x
  3. Step 3: Cross multiply
    11,869.20x = 16,378.82 × 6,490.57
  4. Step 4: Simplify right side
    11,869.20x = 106,307,820.17
  5. Step 5: Solve for x
    x = 106,307,820.17/11,869.20
  6. Step 6: Final answer
    x = 8,956.61

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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.