Home / 35,255.20-48,639.56-20,136.96

Finding the Fourth Proportional to 35,255.20, 48,639.56 and 20,136.96

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Solution

The fourth proportional to 35,255.20, 48,639.56 and 20,136.96 is: 27,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,255.20 : 48,639.56 = 20,136.96 : x
  2. Step 2: Convert to fraction form
    35,255.20/48,639.56 = 20,136.96/x
  3. Step 3: Cross multiply
    35,255.20x = 48,639.56 × 20,136.96
  4. Step 4: Simplify right side
    35,255.20x = 979,452,874.14
  5. Step 5: Solve for x
    x = 979,452,874.14/35,255.20
  6. Step 6: Final answer
    x = 27,781.80

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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.