Home / 20,507.15-30,761.39-6,467.31

Finding the Fourth Proportional to 20,507.15, 30,761.39 and 6,467.31

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Solution

The fourth proportional to 20,507.15, 30,761.39 and 6,467.31 is: 9,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.15 : 30,761.39 = 6,467.31 : x
  2. Step 2: Convert to fraction form
    20,507.15/30,761.39 = 6,467.31/x
  3. Step 3: Cross multiply
    20,507.15x = 30,761.39 × 6,467.31
  4. Step 4: Simplify right side
    20,507.15x = 198,943,503.48
  5. Step 5: Solve for x
    x = 198,943,503.48/20,507.15
  6. Step 6: Final answer
    x = 9,701.18

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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.