Home / 11,436.31-15,782.39-6,400.49

Finding the Fourth Proportional to 11,436.31, 15,782.39 and 6,400.49

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Solution

The fourth proportional to 11,436.31, 15,782.39 and 6,400.49 is: 8,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.31 : 15,782.39 = 6,400.49 : x
  2. Step 2: Convert to fraction form
    11,436.31/15,782.39 = 6,400.49/x
  3. Step 3: Cross multiply
    11,436.31x = 15,782.39 × 6,400.49
  4. Step 4: Simplify right side
    11,436.31x = 101,015,029.37
  5. Step 5: Solve for x
    x = 101,015,029.37/11,436.31
  6. Step 6: Final answer
    x = 8,832.83

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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.