Home / 10,720.08-16,081.20-3,699.90

Finding the Fourth Proportional to 10,720.08, 16,081.20 and 3,699.90

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Solution

The fourth proportional to 10,720.08, 16,081.20 and 3,699.90 is: 5,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.08 : 16,081.20 = 3,699.90 : x
  2. Step 2: Convert to fraction form
    10,720.08/16,081.20 = 3,699.90/x
  3. Step 3: Cross multiply
    10,720.08x = 16,081.20 × 3,699.90
  4. Step 4: Simplify right side
    10,720.08x = 59,498,831.88
  5. Step 5: Solve for x
    x = 59,498,831.88/10,720.08
  6. Step 6: Final answer
    x = 5,550.22

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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.