Home / 20,195.16-27,870.43-11,242.47

Finding the Fourth Proportional to 20,195.16, 27,870.43 and 11,242.47

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Solution

The fourth proportional to 20,195.16, 27,870.43 and 11,242.47 is: 15,515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.16 : 27,870.43 = 11,242.47 : x
  2. Step 2: Convert to fraction form
    20,195.16/27,870.43 = 11,242.47/x
  3. Step 3: Cross multiply
    20,195.16x = 27,870.43 × 11,242.47
  4. Step 4: Simplify right side
    20,195.16x = 313,332,473.16
  5. Step 5: Solve for x
    x = 313,332,473.16/20,195.16
  6. Step 6: Final answer
    x = 15,515.23

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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.