Home / 33,136.85-45,753.71-20,407.56

Finding the Fourth Proportional to 33,136.85, 45,753.71 and 20,407.56

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Solution

The fourth proportional to 33,136.85, 45,753.71 and 20,407.56 is: 28,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,136.85 : 45,753.71 = 20,407.56 : x
  2. Step 2: Convert to fraction form
    33,136.85/45,753.71 = 20,407.56/x
  3. Step 3: Cross multiply
    33,136.85x = 45,753.71 × 20,407.56
  4. Step 4: Simplify right side
    33,136.85x = 933,721,480.01
  5. Step 5: Solve for x
    x = 933,721,480.01/33,136.85
  6. Step 6: Final answer
    x = 28,177.74

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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.