Home / 18,139.33-27,222.63-13,470.22

Finding the Fourth Proportional to 18,139.33, 27,222.63 and 13,470.22

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Solution

The fourth proportional to 18,139.33, 27,222.63 and 13,470.22 is: 20,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.33 : 27,222.63 = 13,470.22 : x
  2. Step 2: Convert to fraction form
    18,139.33/27,222.63 = 13,470.22/x
  3. Step 3: Cross multiply
    18,139.33x = 27,222.63 × 13,470.22
  4. Step 4: Simplify right side
    18,139.33x = 366,694,815.08
  5. Step 5: Solve for x
    x = 366,694,815.08/18,139.33
  6. Step 6: Final answer
    x = 20,215.46

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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.