Home / 33,109.20-45,672.48-20,987.52

Finding the Fourth Proportional to 33,109.20, 45,672.48 and 20,987.52

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Solution

The fourth proportional to 33,109.20, 45,672.48 and 20,987.52 is: 28,951.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,109.20 : 45,672.48 = 20,987.52 : x
  2. Step 2: Convert to fraction form
    33,109.20/45,672.48 = 20,987.52/x
  3. Step 3: Cross multiply
    33,109.20x = 45,672.48 × 20,987.52
  4. Step 4: Simplify right side
    33,109.20x = 958,552,087.45
  5. Step 5: Solve for x
    x = 958,552,087.45/33,109.20
  6. Step 6: Final answer
    x = 28,951.23

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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.