Home / 20,195.66-27,869.72-11,243.16

Finding the Fourth Proportional to 20,195.66, 27,869.72 and 11,243.16

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Solution

The fourth proportional to 20,195.66, 27,869.72 and 11,243.16 is: 15,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.66 : 27,869.72 = 11,243.16 : x
  2. Step 2: Convert to fraction form
    20,195.66/27,869.72 = 11,243.16/x
  3. Step 3: Cross multiply
    20,195.66x = 27,869.72 × 11,243.16
  4. Step 4: Simplify right side
    20,195.66x = 313,343,721.12
  5. Step 5: Solve for x
    x = 313,343,721.12/20,195.66
  6. Step 6: Final answer
    x = 15,515.40

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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.