Home / 20,698.20-31,029.84-9,002.70

Finding the Fourth Proportional to 20,698.20, 31,029.84 and 9,002.70

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Solution

The fourth proportional to 20,698.20, 31,029.84 and 9,002.70 is: 13,496.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.20 : 31,029.84 = 9,002.70 : x
  2. Step 2: Convert to fraction form
    20,698.20/31,029.84 = 9,002.70/x
  3. Step 3: Cross multiply
    20,698.20x = 31,029.84 × 9,002.70
  4. Step 4: Simplify right side
    20,698.20x = 279,352,340.57
  5. Step 5: Solve for x
    x = 279,352,340.57/20,698.20
  6. Step 6: Final answer
    x = 13,496.46

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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.