Home / 20,509.74-30,765.30-5,717.43

Finding the Fourth Proportional to 20,509.74, 30,765.30 and 5,717.43

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Solution

The fourth proportional to 20,509.74, 30,765.30 and 5,717.43 is: 8,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.74 : 30,765.30 = 5,717.43 : x
  2. Step 2: Convert to fraction form
    20,509.74/30,765.30 = 5,717.43/x
  3. Step 3: Cross multiply
    20,509.74x = 30,765.30 × 5,717.43
  4. Step 4: Simplify right side
    20,509.74x = 175,898,449.18
  5. Step 5: Solve for x
    x = 175,898,449.18/20,509.74
  6. Step 6: Final answer
    x = 8,576.34

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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.