Home / 21,186.50-31,761.61-8,698.73

Finding the Fourth Proportional to 21,186.50, 31,761.61 and 8,698.73

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Solution

The fourth proportional to 21,186.50, 31,761.61 and 8,698.73 is: 13,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.50 : 31,761.61 = 8,698.73 : x
  2. Step 2: Convert to fraction form
    21,186.50/31,761.61 = 8,698.73/x
  3. Step 3: Cross multiply
    21,186.50x = 31,761.61 × 8,698.73
  4. Step 4: Simplify right side
    21,186.50x = 276,285,489.20
  5. Step 5: Solve for x
    x = 276,285,489.20/21,186.50
  6. Step 6: Final answer
    x = 13,040.64

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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.