Home / 11,436.44-15,780.90-6,400.92

Finding the Fourth Proportional to 11,436.44, 15,780.90 and 6,400.92

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Solution

The fourth proportional to 11,436.44, 15,780.90 and 6,400.92 is: 8,832.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.44 : 15,780.90 = 6,400.92 : x
  2. Step 2: Convert to fraction form
    11,436.44/15,780.90 = 6,400.92/x
  3. Step 3: Cross multiply
    11,436.44x = 15,780.90 × 6,400.92
  4. Step 4: Simplify right side
    11,436.44x = 101,012,278.43
  5. Step 5: Solve for x
    x = 101,012,278.43/11,436.44
  6. Step 6: Final answer
    x = 8,832.49

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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.