Home / 20,664.42-30,999.55-6,621.17

Finding the Fourth Proportional to 20,664.42, 30,999.55 and 6,621.17

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Solution

The fourth proportional to 20,664.42, 30,999.55 and 6,621.17 is: 9,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.42 : 30,999.55 = 6,621.17 : x
  2. Step 2: Convert to fraction form
    20,664.42/30,999.55 = 6,621.17/x
  3. Step 3: Cross multiply
    20,664.42x = 30,999.55 × 6,621.17
  4. Step 4: Simplify right side
    20,664.42x = 205,253,290.47
  5. Step 5: Solve for x
    x = 205,253,290.47/20,664.42
  6. Step 6: Final answer
    x = 9,932.69

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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.