Home / 13,943.83-20,910-6,921.27

Finding the Fourth Proportional to 13,943.83, 20,910 and 6,921.27

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Solution

The fourth proportional to 13,943.83, 20,910 and 6,921.27 is: 10,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.83 : 20,910 = 6,921.27 : x
  2. Step 2: Convert to fraction form
    13,943.83/20,910 = 6,921.27/x
  3. Step 3: Cross multiply
    13,943.83x = 20,910 × 6,921.27
  4. Step 4: Simplify right side
    13,943.83x = 144,723,755.70
  5. Step 5: Solve for x
    x = 144,723,755.70/13,943.83
  6. Step 6: Final answer
    x = 10,379.05

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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.