Home / 20,629.98-30,937.04-7,479.18

Finding the Fourth Proportional to 20,629.98, 30,937.04 and 7,479.18

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Solution

The fourth proportional to 20,629.98, 30,937.04 and 7,479.18 is: 11,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.98 : 30,937.04 = 7,479.18 : x
  2. Step 2: Convert to fraction form
    20,629.98/30,937.04 = 7,479.18/x
  3. Step 3: Cross multiply
    20,629.98x = 30,937.04 × 7,479.18
  4. Step 4: Simplify right side
    20,629.98x = 231,383,690.83
  5. Step 5: Solve for x
    x = 231,383,690.83/20,629.98
  6. Step 6: Final answer
    x = 11,215.90

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1.5x scale

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.