Home / 20,850.74-28,776.81-12,352.20

Finding the Fourth Proportional to 20,850.74, 28,776.81 and 12,352.20

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Solution

The fourth proportional to 20,850.74, 28,776.81 and 12,352.20 is: 17,047.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.74 : 28,776.81 = 12,352.20 : x
  2. Step 2: Convert to fraction form
    20,850.74/28,776.81 = 12,352.20/x
  3. Step 3: Cross multiply
    20,850.74x = 28,776.81 × 12,352.20
  4. Step 4: Simplify right side
    20,850.74x = 355,456,912.48
  5. Step 5: Solve for x
    x = 355,456,912.48/20,850.74
  6. Step 6: Final answer
    x = 17,047.69

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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.