Home / 20,509.44-30,765.84-5,718.49

Finding the Fourth Proportional to 20,509.44, 30,765.84 and 5,718.49

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Solution

The fourth proportional to 20,509.44, 30,765.84 and 5,718.49 is: 8,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.44 : 30,765.84 = 5,718.49 : x
  2. Step 2: Convert to fraction form
    20,509.44/30,765.84 = 5,718.49/x
  3. Step 3: Cross multiply
    20,509.44x = 30,765.84 × 5,718.49
  4. Step 4: Simplify right side
    20,509.44x = 175,934,148.38
  5. Step 5: Solve for x
    x = 175,934,148.38/20,509.44
  6. Step 6: Final answer
    x = 8,578.20

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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.