Home / 19,201.96-28,785.66-9,939.88

Finding the Fourth Proportional to 19,201.96, 28,785.66 and 9,939.88

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Solution

The fourth proportional to 19,201.96, 28,785.66 and 9,939.88 is: 14,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.96 : 28,785.66 = 9,939.88 : x
  2. Step 2: Convert to fraction form
    19,201.96/28,785.66 = 9,939.88/x
  3. Step 3: Cross multiply
    19,201.96x = 28,785.66 × 9,939.88
  4. Step 4: Simplify right side
    19,201.96x = 286,126,006.12
  5. Step 5: Solve for x
    x = 286,126,006.12/19,201.96
  6. Step 6: Final answer
    x = 14,900.88

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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.