Home / 11,525.85-17,280-5,287.64

Finding the Fourth Proportional to 11,525.85, 17,280 and 5,287.64

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Solution

The fourth proportional to 11,525.85, 17,280 and 5,287.64 is: 7,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,525.85 : 17,280 = 5,287.64 : x
  2. Step 2: Convert to fraction form
    11,525.85/17,280 = 5,287.64/x
  3. Step 3: Cross multiply
    11,525.85x = 17,280 × 5,287.64
  4. Step 4: Simplify right side
    11,525.85x = 91,370,332.80
  5. Step 5: Solve for x
    x = 91,370,332.80/11,525.85
  6. Step 6: Final answer
    x = 7,927.43

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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.