Home / 11,148.70-15,388.50-6,436.12

Finding the Fourth Proportional to 11,148.70, 15,388.50 and 6,436.12

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Solution

The fourth proportional to 11,148.70, 15,388.50 and 6,436.12 is: 8,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.70 : 15,388.50 = 6,436.12 : x
  2. Step 2: Convert to fraction form
    11,148.70/15,388.50 = 6,436.12/x
  3. Step 3: Cross multiply
    11,148.70x = 15,388.50 × 6,436.12
  4. Step 4: Simplify right side
    11,148.70x = 99,042,232.62
  5. Step 5: Solve for x
    x = 99,042,232.62/11,148.70
  6. Step 6: Final answer
    x = 8,883.75

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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.