Home / 20,508.13-30,761.64-5,716.45

Finding the Fourth Proportional to 20,508.13, 30,761.64 and 5,716.45

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Solution

The fourth proportional to 20,508.13, 30,761.64 and 5,716.45 is: 8,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.13 : 30,761.64 = 5,716.45 : x
  2. Step 2: Convert to fraction form
    20,508.13/30,761.64 = 5,716.45/x
  3. Step 3: Cross multiply
    20,508.13x = 30,761.64 × 5,716.45
  4. Step 4: Simplify right side
    20,508.13x = 175,847,376.98
  5. Step 5: Solve for x
    x = 175,847,376.98/20,508.13
  6. Step 6: Final answer
    x = 8,574.52

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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.