Home / 11,387.13-17,077.37-3,990.21

Finding the Fourth Proportional to 11,387.13, 17,077.37 and 3,990.21

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Solution

The fourth proportional to 11,387.13, 17,077.37 and 3,990.21 is: 5,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.13 : 17,077.37 = 3,990.21 : x
  2. Step 2: Convert to fraction form
    11,387.13/17,077.37 = 3,990.21/x
  3. Step 3: Cross multiply
    11,387.13x = 17,077.37 × 3,990.21
  4. Step 4: Simplify right side
    11,387.13x = 68,142,272.60
  5. Step 5: Solve for x
    x = 68,142,272.60/11,387.13
  6. Step 6: Final answer
    x = 5,984.15

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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.