Home / 19,871.91-27,423.81-10,919.97

Finding the Fourth Proportional to 19,871.91, 27,423.81 and 10,919.97

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Solution

The fourth proportional to 19,871.91, 27,423.81 and 10,919.97 is: 15,069.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.91 : 27,423.81 = 10,919.97 : x
  2. Step 2: Convert to fraction form
    19,871.91/27,423.81 = 10,919.97/x
  3. Step 3: Cross multiply
    19,871.91x = 27,423.81 × 10,919.97
  4. Step 4: Simplify right side
    19,871.91x = 299,467,182.49
  5. Step 5: Solve for x
    x = 299,467,182.49/19,871.91
  6. Step 6: Final answer
    x = 15,069.87

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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.