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Finding the Fourth Proportional to 27,229.36, 40,759.16 and 20,973.20

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Solution

The fourth proportional to 27,229.36, 40,759.16 and 20,973.20 is: 31,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,229.36 : 40,759.16 = 20,973.20 : x
  2. Step 2: Convert to fraction form
    27,229.36/40,759.16 = 20,973.20/x
  3. Step 3: Cross multiply
    27,229.36x = 40,759.16 × 20,973.20
  4. Step 4: Simplify right side
    27,229.36x = 854,850,014.51
  5. Step 5: Solve for x
    x = 854,850,014.51/27,229.36
  6. Step 6: Final answer
    x = 31,394.42

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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.