Home / 20,707.97-31,052.43-6,665.40

Finding the Fourth Proportional to 20,707.97, 31,052.43 and 6,665.40

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Solution

The fourth proportional to 20,707.97, 31,052.43 and 6,665.40 is: 9,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.97 : 31,052.43 = 6,665.40 : x
  2. Step 2: Convert to fraction form
    20,707.97/31,052.43 = 6,665.40/x
  3. Step 3: Cross multiply
    20,707.97x = 31,052.43 × 6,665.40
  4. Step 4: Simplify right side
    20,707.97x = 206,976,866.92
  5. Step 5: Solve for x
    x = 206,976,866.92/20,707.97
  6. Step 6: Final answer
    x = 9,995.04

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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.