Home / 11,438.60-17,156.12-3,119.28

Finding the Fourth Proportional to 11,438.60, 17,156.12 and 3,119.28

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Solution

The fourth proportional to 11,438.60, 17,156.12 and 3,119.28 is: 4,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.60 : 17,156.12 = 3,119.28 : x
  2. Step 2: Convert to fraction form
    11,438.60/17,156.12 = 3,119.28/x
  3. Step 3: Cross multiply
    11,438.60x = 17,156.12 × 3,119.28
  4. Step 4: Simplify right side
    11,438.60x = 53,514,726.40
  5. Step 5: Solve for x
    x = 53,514,726.40/11,438.60
  6. Step 6: Final answer
    x = 4,678.44

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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.