Home / 18,078.85-27,113.91-4,931.29

Finding the Fourth Proportional to 18,078.85, 27,113.91 and 4,931.29

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Solution

The fourth proportional to 18,078.85, 27,113.91 and 4,931.29 is: 7,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.85 : 27,113.91 = 4,931.29 : x
  2. Step 2: Convert to fraction form
    18,078.85/27,113.91 = 4,931.29/x
  3. Step 3: Cross multiply
    18,078.85x = 27,113.91 × 4,931.29
  4. Step 4: Simplify right side
    18,078.85x = 133,706,553.24
  5. Step 5: Solve for x
    x = 133,706,553.24/18,078.85
  6. Step 6: Final answer
    x = 7,395.74

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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.