Home / 28,074.28-38,745.36-16,138.12

Finding the Fourth Proportional to 28,074.28, 38,745.36 and 16,138.12

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Solution

The fourth proportional to 28,074.28, 38,745.36 and 16,138.12 is: 22,272.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.28 : 38,745.36 = 16,138.12 : x
  2. Step 2: Convert to fraction form
    28,074.28/38,745.36 = 16,138.12/x
  3. Step 3: Cross multiply
    28,074.28x = 38,745.36 × 16,138.12
  4. Step 4: Simplify right side
    28,074.28x = 625,277,269.12
  5. Step 5: Solve for x
    x = 625,277,269.12/28,074.28
  6. Step 6: Final answer
    x = 22,272.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.