Home / 11,436.32-15,797.21-8,780.37

Finding the Fourth Proportional to 11,436.32, 15,797.21 and 8,780.37

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Solution

The fourth proportional to 11,436.32, 15,797.21 and 8,780.37 is: 12,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.32 : 15,797.21 = 8,780.37 : x
  2. Step 2: Convert to fraction form
    11,436.32/15,797.21 = 8,780.37/x
  3. Step 3: Cross multiply
    11,436.32x = 15,797.21 × 8,780.37
  4. Step 4: Simplify right side
    11,436.32x = 138,705,245.63
  5. Step 5: Solve for x
    x = 138,705,245.63/11,436.32
  6. Step 6: Final answer
    x = 12,128.48

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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.