Home / 20,112.30-27,763.36-12,152.53

Finding the Fourth Proportional to 20,112.30, 27,763.36 and 12,152.53

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Solution

The fourth proportional to 20,112.30, 27,763.36 and 12,152.53 is: 16,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.30 : 27,763.36 = 12,152.53 : x
  2. Step 2: Convert to fraction form
    20,112.30/27,763.36 = 12,152.53/x
  3. Step 3: Cross multiply
    20,112.30x = 27,763.36 × 12,152.53
  4. Step 4: Simplify right side
    20,112.30x = 337,395,069.62
  5. Step 5: Solve for x
    x = 337,395,069.62/20,112.30
  6. Step 6: Final answer
    x = 16,775.56

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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.