Home / 20,887.74-31,330.14-9,796.86

Finding the Fourth Proportional to 20,887.74, 31,330.14 and 9,796.86

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Solution

The fourth proportional to 20,887.74, 31,330.14 and 9,796.86 is: 14,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.74 : 31,330.14 = 9,796.86 : x
  2. Step 2: Convert to fraction form
    20,887.74/31,330.14 = 9,796.86/x
  3. Step 3: Cross multiply
    20,887.74x = 31,330.14 × 9,796.86
  4. Step 4: Simplify right side
    20,887.74x = 306,936,995.36
  5. Step 5: Solve for x
    x = 306,936,995.36/20,887.74
  6. Step 6: Final answer
    x = 14,694.60

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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.