Home / 19,872.20-27,423.46-10,919.80

Finding the Fourth Proportional to 19,872.20, 27,423.46 and 10,919.80

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Solution

The fourth proportional to 19,872.20, 27,423.46 and 10,919.80 is: 15,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.20 : 27,423.46 = 10,919.80 : x
  2. Step 2: Convert to fraction form
    19,872.20/27,423.46 = 10,919.80/x
  3. Step 3: Cross multiply
    19,872.20x = 27,423.46 × 10,919.80
  4. Step 4: Simplify right side
    19,872.20x = 299,458,698.51
  5. Step 5: Solve for x
    x = 299,458,698.51/19,872.20
  6. Step 6: Final answer
    x = 15,069.23

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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.