Home / 20,396.02-28,149.78-12,012.52

Finding the Fourth Proportional to 20,396.02, 28,149.78 and 12,012.52

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Solution

The fourth proportional to 20,396.02, 28,149.78 and 12,012.52 is: 16,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.02 : 28,149.78 = 12,012.52 : x
  2. Step 2: Convert to fraction form
    20,396.02/28,149.78 = 12,012.52/x
  3. Step 3: Cross multiply
    20,396.02x = 28,149.78 × 12,012.52
  4. Step 4: Simplify right side
    20,396.02x = 338,149,795.25
  5. Step 5: Solve for x
    x = 338,149,795.25/20,396.02
  6. Step 6: Final answer
    x = 16,579.20

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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.