Home / 11,215.12-15,476.64-6,247.12

Finding the Fourth Proportional to 11,215.12, 15,476.64 and 6,247.12

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Solution

The fourth proportional to 11,215.12, 15,476.64 and 6,247.12 is: 8,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.12 : 15,476.64 = 6,247.12 : x
  2. Step 2: Convert to fraction form
    11,215.12/15,476.64 = 6,247.12/x
  3. Step 3: Cross multiply
    11,215.12x = 15,476.64 × 6,247.12
  4. Step 4: Simplify right side
    11,215.12x = 96,684,427.28
  5. Step 5: Solve for x
    x = 96,684,427.28/11,215.12
  6. Step 6: Final answer
    x = 8,620.90

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Half scale
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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.