Home / 20,707.23-31,051.29-6,664.65

Finding the Fourth Proportional to 20,707.23, 31,051.29 and 6,664.65

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Solution

The fourth proportional to 20,707.23, 31,051.29 and 6,664.65 is: 9,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.23 : 31,051.29 = 6,664.65 : x
  2. Step 2: Convert to fraction form
    20,707.23/31,051.29 = 6,664.65/x
  3. Step 3: Cross multiply
    20,707.23x = 31,051.29 × 6,664.65
  4. Step 4: Simplify right side
    20,707.23x = 206,945,979.90
  5. Step 5: Solve for x
    x = 206,945,979.90/20,707.23
  6. Step 6: Final answer
    x = 9,993.90

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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.