Home / 11,100.74-15,322.43-6,388.16

Finding the Fourth Proportional to 11,100.74, 15,322.43 and 6,388.16

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Solution

The fourth proportional to 11,100.74, 15,322.43 and 6,388.16 is: 8,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,100.74 : 15,322.43 = 6,388.16 : x
  2. Step 2: Convert to fraction form
    11,100.74/15,322.43 = 6,388.16/x
  3. Step 3: Cross multiply
    11,100.74x = 15,322.43 × 6,388.16
  4. Step 4: Simplify right side
    11,100.74x = 97,882,073.79
  5. Step 5: Solve for x
    x = 97,882,073.79/11,100.74
  6. Step 6: Final answer
    x = 8,817.62

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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.