Home / 20,705.11-31,053.31-6,666.39

Finding the Fourth Proportional to 20,705.11, 31,053.31 and 6,666.39

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Solution

The fourth proportional to 20,705.11, 31,053.31 and 6,666.39 is: 9,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.11 : 31,053.31 = 6,666.39 : x
  2. Step 2: Convert to fraction form
    20,705.11/31,053.31 = 6,666.39/x
  3. Step 3: Cross multiply
    20,705.11x = 31,053.31 × 6,666.39
  4. Step 4: Simplify right side
    20,705.11x = 207,013,458.58
  5. Step 5: Solve for x
    x = 207,013,458.58/20,705.11
  6. Step 6: Final answer
    x = 9,998.18

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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.