Home / 11,213.21-15,481.69-6,970.61

Finding the Fourth Proportional to 11,213.21, 15,481.69 and 6,970.61

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Solution

The fourth proportional to 11,213.21, 15,481.69 and 6,970.61 is: 9,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.21 : 15,481.69 = 6,970.61 : x
  2. Step 2: Convert to fraction form
    11,213.21/15,481.69 = 6,970.61/x
  3. Step 3: Cross multiply
    11,213.21x = 15,481.69 × 6,970.61
  4. Step 4: Simplify right side
    11,213.21x = 107,916,844.41
  5. Step 5: Solve for x
    x = 107,916,844.41/11,213.21
  6. Step 6: Final answer
    x = 9,624.08

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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.