Home / 33,212.88-45,838.80-20,641.68

Finding the Fourth Proportional to 33,212.88, 45,838.80 and 20,641.68

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Solution

The fourth proportional to 33,212.88, 45,838.80 and 20,641.68 is: 28,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,212.88 : 45,838.80 = 20,641.68 : x
  2. Step 2: Convert to fraction form
    33,212.88/45,838.80 = 20,641.68/x
  3. Step 3: Cross multiply
    33,212.88x = 45,838.80 × 20,641.68
  4. Step 4: Simplify right side
    33,212.88x = 946,189,841.18
  5. Step 5: Solve for x
    x = 946,189,841.18/33,212.88
  6. Step 6: Final answer
    x = 28,488.64

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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.