Home / 20,190.71-27,863.73-11,239.20

Finding the Fourth Proportional to 20,190.71, 27,863.73 and 11,239.20

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Solution

The fourth proportional to 20,190.71, 27,863.73 and 11,239.20 is: 15,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.71 : 27,863.73 = 11,239.20 : x
  2. Step 2: Convert to fraction form
    20,190.71/27,863.73 = 11,239.20/x
  3. Step 3: Cross multiply
    20,190.71x = 27,863.73 × 11,239.20
  4. Step 4: Simplify right side
    20,190.71x = 313,166,034.22
  5. Step 5: Solve for x
    x = 313,166,034.22/20,190.71
  6. Step 6: Final answer
    x = 15,510.40

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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.