Home / 28,109.79-38,794.28-16,173.63

Finding the Fourth Proportional to 28,109.79, 38,794.28 and 16,173.63

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Solution

The fourth proportional to 28,109.79, 38,794.28 and 16,173.63 is: 22,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.79 : 38,794.28 = 16,173.63 : x
  2. Step 2: Convert to fraction form
    28,109.79/38,794.28 = 16,173.63/x
  3. Step 3: Cross multiply
    28,109.79x = 38,794.28 × 16,173.63
  4. Step 4: Simplify right side
    28,109.79x = 627,444,249.97
  5. Step 5: Solve for x
    x = 627,444,249.97/28,109.79
  6. Step 6: Final answer
    x = 22,321.20

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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.