Home / 19,871.44-27,422.94-10,919.32

Finding the Fourth Proportional to 19,871.44, 27,422.94 and 10,919.32

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Solution

The fourth proportional to 19,871.44, 27,422.94 and 10,919.32 is: 15,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.44 : 27,422.94 = 10,919.32 : x
  2. Step 2: Convert to fraction form
    19,871.44/27,422.94 = 10,919.32/x
  3. Step 3: Cross multiply
    19,871.44x = 27,422.94 × 10,919.32
  4. Step 4: Simplify right side
    19,871.44x = 299,439,857.20
  5. Step 5: Solve for x
    x = 299,439,857.20/19,871.44
  6. Step 6: Final answer
    x = 15,068.86

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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.