Home / 21,324.72-31,987.04-11,468.64

Finding the Fourth Proportional to 21,324.72, 31,987.04 and 11,468.64

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Solution

The fourth proportional to 21,324.72, 31,987.04 and 11,468.64 is: 17,202.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.72 : 31,987.04 = 11,468.64 : x
  2. Step 2: Convert to fraction form
    21,324.72/31,987.04 = 11,468.64/x
  3. Step 3: Cross multiply
    21,324.72x = 31,987.04 × 11,468.64
  4. Step 4: Simplify right side
    21,324.72x = 366,847,846.43
  5. Step 5: Solve for x
    x = 366,847,846.43/21,324.72
  6. Step 6: Final answer
    x = 17,202.94

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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.