Home / 11,440.05-17,147.79-7,478.88

Finding the Fourth Proportional to 11,440.05, 17,147.79 and 7,478.88

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Solution

The fourth proportional to 11,440.05, 17,147.79 and 7,478.88 is: 11,210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.05 : 17,147.79 = 7,478.88 : x
  2. Step 2: Convert to fraction form
    11,440.05/17,147.79 = 7,478.88/x
  3. Step 3: Cross multiply
    11,440.05x = 17,147.79 × 7,478.88
  4. Step 4: Simplify right side
    11,440.05x = 128,246,263.68
  5. Step 5: Solve for x
    x = 128,246,263.68/11,440.05
  6. Step 6: Final answer
    x = 11,210.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.