Home / 11,479.56-15,841.80-6,443.78

Finding the Fourth Proportional to 11,479.56, 15,841.80 and 6,443.78

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Solution

The fourth proportional to 11,479.56, 15,841.80 and 6,443.78 is: 8,892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.56 : 15,841.80 = 6,443.78 : x
  2. Step 2: Convert to fraction form
    11,479.56/15,841.80 = 6,443.78/x
  3. Step 3: Cross multiply
    11,479.56x = 15,841.80 × 6,443.78
  4. Step 4: Simplify right side
    11,479.56x = 102,081,074.00
  5. Step 5: Solve for x
    x = 102,081,074.00/11,479.56
  6. Step 6: Final answer
    x = 8,892.42

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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.