Home / 20,745.32-31,107.74-9,053.48

Finding the Fourth Proportional to 20,745.32, 31,107.74 and 9,053.48

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Solution

The fourth proportional to 20,745.32, 31,107.74 and 9,053.48 is: 13,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.32 : 31,107.74 = 9,053.48 : x
  2. Step 2: Convert to fraction form
    20,745.32/31,107.74 = 9,053.48/x
  3. Step 3: Cross multiply
    20,745.32x = 31,107.74 × 9,053.48
  4. Step 4: Simplify right side
    20,745.32x = 281,633,301.94
  5. Step 5: Solve for x
    x = 281,633,301.94/20,745.32
  6. Step 6: Final answer
    x = 13,575.75

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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.