Home / 10,934.40-16,402.40-3,143.28

Finding the Fourth Proportional to 10,934.40, 16,402.40 and 3,143.28

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Solution

The fourth proportional to 10,934.40, 16,402.40 and 3,143.28 is: 4,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,934.40 : 16,402.40 = 3,143.28 : x
  2. Step 2: Convert to fraction form
    10,934.40/16,402.40 = 3,143.28/x
  3. Step 3: Cross multiply
    10,934.40x = 16,402.40 × 3,143.28
  4. Step 4: Simplify right side
    10,934.40x = 51,557,335.87
  5. Step 5: Solve for x
    x = 51,557,335.87/10,934.40
  6. Step 6: Final answer
    x = 4,715.15

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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.