Home / 20,698.77-31,048.73-6,660.21

Finding the Fourth Proportional to 20,698.77, 31,048.73 and 6,660.21

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Solution

The fourth proportional to 20,698.77, 31,048.73 and 6,660.21 is: 9,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.77 : 31,048.73 = 6,660.21 : x
  2. Step 2: Convert to fraction form
    20,698.77/31,048.73 = 6,660.21/x
  3. Step 3: Cross multiply
    20,698.77x = 31,048.73 × 6,660.21
  4. Step 4: Simplify right side
    20,698.77x = 206,791,062.03
  5. Step 5: Solve for x
    x = 206,791,062.03/20,698.77
  6. Step 6: Final answer
    x = 9,990.50

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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.