Home / 20,765.15-31,152.68-6,725.19

Finding the Fourth Proportional to 20,765.15, 31,152.68 and 6,725.19

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Solution

The fourth proportional to 20,765.15, 31,152.68 and 6,725.19 is: 10,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.15 : 31,152.68 = 6,725.19 : x
  2. Step 2: Convert to fraction form
    20,765.15/31,152.68 = 6,725.19/x
  3. Step 3: Cross multiply
    20,765.15x = 31,152.68 × 6,725.19
  4. Step 4: Simplify right side
    20,765.15x = 209,507,519.43
  5. Step 5: Solve for x
    x = 209,507,519.43/20,765.15
  6. Step 6: Final answer
    x = 10,089.38

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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.