Home / 19,871.42-27,423.18-10,919.57

Finding the Fourth Proportional to 19,871.42, 27,423.18 and 10,919.57

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Solution

The fourth proportional to 19,871.42, 27,423.18 and 10,919.57 is: 15,069.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.42 : 27,423.18 = 10,919.57 : x
  2. Step 2: Convert to fraction form
    19,871.42/27,423.18 = 10,919.57/x
  3. Step 3: Cross multiply
    19,871.42x = 27,423.18 × 10,919.57
  4. Step 4: Simplify right side
    19,871.42x = 299,449,196.52
  5. Step 5: Solve for x
    x = 299,449,196.52/19,871.42
  6. Step 6: Final answer
    x = 15,069.34

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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.