Home / 20,215.10-30,340.65-11,884.70

Finding the Fourth Proportional to 20,215.10, 30,340.65 and 11,884.70

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Solution

The fourth proportional to 20,215.10, 30,340.65 and 11,884.70 is: 17,837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.10 : 30,340.65 = 11,884.70 : x
  2. Step 2: Convert to fraction form
    20,215.10/30,340.65 = 11,884.70/x
  3. Step 3: Cross multiply
    20,215.10x = 30,340.65 × 11,884.70
  4. Step 4: Simplify right side
    20,215.10x = 360,589,523.06
  5. Step 5: Solve for x
    x = 360,589,523.06/20,215.10
  6. Step 6: Final answer
    x = 17,837.63

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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.