Home / 11,478.53-15,841.15-6,443.12

Finding the Fourth Proportional to 11,478.53, 15,841.15 and 6,443.12

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Solution

The fourth proportional to 11,478.53, 15,841.15 and 6,443.12 is: 8,891.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.53 : 15,841.15 = 6,443.12 : x
  2. Step 2: Convert to fraction form
    11,478.53/15,841.15 = 6,443.12/x
  3. Step 3: Cross multiply
    11,478.53x = 15,841.15 × 6,443.12
  4. Step 4: Simplify right side
    11,478.53x = 102,066,453.88
  5. Step 5: Solve for x
    x = 102,066,453.88/11,478.53
  6. Step 6: Final answer
    x = 8,891.94

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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.