Home / 27,128.70-40,705.20-9,611.10

Finding the Fourth Proportional to 27,128.70, 40,705.20 and 9,611.10

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Solution

The fourth proportional to 27,128.70, 40,705.20 and 9,611.10 is: 14,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.70 : 40,705.20 = 9,611.10 : x
  2. Step 2: Convert to fraction form
    27,128.70/40,705.20 = 9,611.10/x
  3. Step 3: Cross multiply
    27,128.70x = 40,705.20 × 9,611.10
  4. Step 4: Simplify right side
    27,128.70x = 391,221,747.72
  5. Step 5: Solve for x
    x = 391,221,747.72/27,128.70
  6. Step 6: Final answer
    x = 14,420.95

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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.