Home / 13,850.38-20,776.02-3,990.16

Finding the Fourth Proportional to 13,850.38, 20,776.02 and 3,990.16

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Solution

The fourth proportional to 13,850.38, 20,776.02 and 3,990.16 is: 5,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.38 : 20,776.02 = 3,990.16 : x
  2. Step 2: Convert to fraction form
    13,850.38/20,776.02 = 3,990.16/x
  3. Step 3: Cross multiply
    13,850.38x = 20,776.02 × 3,990.16
  4. Step 4: Simplify right side
    13,850.38x = 82,899,643.96
  5. Step 5: Solve for x
    x = 82,899,643.96/13,850.38
  6. Step 6: Final answer
    x = 5,985.37

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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.