Home / 11,151.60-15,389.16-6,115.70

Finding the Fourth Proportional to 11,151.60, 15,389.16 and 6,115.70

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Solution

The fourth proportional to 11,151.60, 15,389.16 and 6,115.70 is: 8,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.60 : 15,389.16 = 6,115.70 : x
  2. Step 2: Convert to fraction form
    11,151.60/15,389.16 = 6,115.70/x
  3. Step 3: Cross multiply
    11,151.60x = 15,389.16 × 6,115.70
  4. Step 4: Simplify right side
    11,151.60x = 94,115,408.87
  5. Step 5: Solve for x
    x = 94,115,408.87/11,151.60
  6. Step 6: Final answer
    x = 8,439.63

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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.