Home / 20,664.17-30,999.18-6,620.92

Finding the Fourth Proportional to 20,664.17, 30,999.18 and 6,620.92

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Solution

The fourth proportional to 20,664.17, 30,999.18 and 6,620.92 is: 9,932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.17 : 30,999.18 = 6,620.92 : x
  2. Step 2: Convert to fraction form
    20,664.17/30,999.18 = 6,620.92/x
  3. Step 3: Cross multiply
    20,664.17x = 30,999.18 × 6,620.92
  4. Step 4: Simplify right side
    20,664.17x = 205,243,013.35
  5. Step 5: Solve for x
    x = 205,243,013.35/20,664.17
  6. Step 6: Final answer
    x = 9,932.31

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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.