Home / 33,228.28-45,858.68-20,478.88

Finding the Fourth Proportional to 33,228.28, 45,858.68 and 20,478.88

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Solution

The fourth proportional to 33,228.28, 45,858.68 and 20,478.88 is: 28,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,228.28 : 45,858.68 = 20,478.88 : x
  2. Step 2: Convert to fraction form
    33,228.28/45,858.68 = 20,478.88/x
  3. Step 3: Cross multiply
    33,228.28x = 45,858.68 × 20,478.88
  4. Step 4: Simplify right side
    33,228.28x = 939,134,404.68
  5. Step 5: Solve for x
    x = 939,134,404.68/33,228.28
  6. Step 6: Final answer
    x = 28,263.11

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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.