Home / 10,220.85-15,331.77-2,825.15

Finding the Fourth Proportional to 10,220.85, 15,331.77 and 2,825.15

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Solution

The fourth proportional to 10,220.85, 15,331.77 and 2,825.15 is: 4,237.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.85 : 15,331.77 = 2,825.15 : x
  2. Step 2: Convert to fraction form
    10,220.85/15,331.77 = 2,825.15/x
  3. Step 3: Cross multiply
    10,220.85x = 15,331.77 × 2,825.15
  4. Step 4: Simplify right side
    10,220.85x = 43,314,473.36
  5. Step 5: Solve for x
    x = 43,314,473.36/10,220.85
  6. Step 6: Final answer
    x = 4,237.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.