Home / 20,340.60-30,509.82-6,488.52

Finding the Fourth Proportional to 20,340.60, 30,509.82 and 6,488.52

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Solution

The fourth proportional to 20,340.60, 30,509.82 and 6,488.52 is: 9,732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.60 : 30,509.82 = 6,488.52 : x
  2. Step 2: Convert to fraction form
    20,340.60/30,509.82 = 6,488.52/x
  3. Step 3: Cross multiply
    20,340.60x = 30,509.82 × 6,488.52
  4. Step 4: Simplify right side
    20,340.60x = 197,963,577.27
  5. Step 5: Solve for x
    x = 197,963,577.27/20,340.60
  6. Step 6: Final answer
    x = 9,732.44

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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.