Home / 11,238.70-16,837.80-5,382.40

Finding the Fourth Proportional to 11,238.70, 16,837.80 and 5,382.40

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Solution

The fourth proportional to 11,238.70, 16,837.80 and 5,382.40 is: 8,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.70 : 16,837.80 = 5,382.40 : x
  2. Step 2: Convert to fraction form
    11,238.70/16,837.80 = 5,382.40/x
  3. Step 3: Cross multiply
    11,238.70x = 16,837.80 × 5,382.40
  4. Step 4: Simplify right side
    11,238.70x = 90,627,774.72
  5. Step 5: Solve for x
    x = 90,627,774.72/11,238.70
  6. Step 6: Final answer
    x = 8,063.90

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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.