Home / 20,881.13-31,326.31-6,091.21

Finding the Fourth Proportional to 20,881.13, 31,326.31 and 6,091.21

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Solution

The fourth proportional to 20,881.13, 31,326.31 and 6,091.21 is: 9,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.13 : 31,326.31 = 6,091.21 : x
  2. Step 2: Convert to fraction form
    20,881.13/31,326.31 = 6,091.21/x
  3. Step 3: Cross multiply
    20,881.13x = 31,326.31 × 6,091.21
  4. Step 4: Simplify right side
    20,881.13x = 190,814,945.65
  5. Step 5: Solve for x
    x = 190,814,945.65/20,881.13
  6. Step 6: Final answer
    x = 9,138.15

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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.