Home / 11,221.36-15,479.78-8,564.16

Finding the Fourth Proportional to 11,221.36, 15,479.78 and 8,564.16

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Solution

The fourth proportional to 11,221.36, 15,479.78 and 8,564.16 is: 11,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.36 : 15,479.78 = 8,564.16 : x
  2. Step 2: Convert to fraction form
    11,221.36/15,479.78 = 8,564.16/x
  3. Step 3: Cross multiply
    11,221.36x = 15,479.78 × 8,564.16
  4. Step 4: Simplify right side
    11,221.36x = 132,571,312.68
  5. Step 5: Solve for x
    x = 132,571,312.68/11,221.36
  6. Step 6: Final answer
    x = 11,814.19

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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.