Home / 20,705.39-31,053.73-6,666.67

Finding the Fourth Proportional to 20,705.39, 31,053.73 and 6,666.67

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Solution

The fourth proportional to 20,705.39, 31,053.73 and 6,666.67 is: 9,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.39 : 31,053.73 = 6,666.67 : x
  2. Step 2: Convert to fraction form
    20,705.39/31,053.73 = 6,666.67/x
  3. Step 3: Cross multiply
    20,705.39x = 31,053.73 × 6,666.67
  4. Step 4: Simplify right side
    20,705.39x = 207,025,004.83
  5. Step 5: Solve for x
    x = 207,025,004.83/20,705.39
  6. Step 6: Final answer
    x = 9,998.61

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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.