Home / 20,192.20-27,864.75-11,239.51

Finding the Fourth Proportional to 20,192.20, 27,864.75 and 11,239.51

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Solution

The fourth proportional to 20,192.20, 27,864.75 and 11,239.51 is: 15,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.20 : 27,864.75 = 11,239.51 : x
  2. Step 2: Convert to fraction form
    20,192.20/27,864.75 = 11,239.51/x
  3. Step 3: Cross multiply
    20,192.20x = 27,864.75 × 11,239.51
  4. Step 4: Simplify right side
    20,192.20x = 313,186,161.01
  5. Step 5: Solve for x
    x = 313,186,161.01/20,192.20
  6. Step 6: Final answer
    x = 15,510.25

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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.