Home / 33,122.81-45,690.03-20,838.69

Finding the Fourth Proportional to 33,122.81, 45,690.03 and 20,838.69

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Solution

The fourth proportional to 33,122.81, 45,690.03 and 20,838.69 is: 28,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,122.81 : 45,690.03 = 20,838.69 : x
  2. Step 2: Convert to fraction form
    33,122.81/45,690.03 = 20,838.69/x
  3. Step 3: Cross multiply
    33,122.81x = 45,690.03 × 20,838.69
  4. Step 4: Simplify right side
    33,122.81x = 952,120,371.26
  5. Step 5: Solve for x
    x = 952,120,371.26/33,122.81
  6. Step 6: Final answer
    x = 28,745.15

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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.