Home / 11,455.36-17,188.89-5,458.21

Finding the Fourth Proportional to 11,455.36, 17,188.89 and 5,458.21

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Solution

The fourth proportional to 11,455.36, 17,188.89 and 5,458.21 is: 8,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.36 : 17,188.89 = 5,458.21 : x
  2. Step 2: Convert to fraction form
    11,455.36/17,188.89 = 5,458.21/x
  3. Step 3: Cross multiply
    11,455.36x = 17,188.89 × 5,458.21
  4. Step 4: Simplify right side
    11,455.36x = 93,820,571.29
  5. Step 5: Solve for x
    x = 93,820,571.29/11,455.36
  6. Step 6: Final answer
    x = 8,190.10

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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.