Home / 19,105.64-28,663.76-8,009.72

Finding the Fourth Proportional to 19,105.64, 28,663.76 and 8,009.72

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Solution

The fourth proportional to 19,105.64, 28,663.76 and 8,009.72 is: 12,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.64 : 28,663.76 = 8,009.72 : x
  2. Step 2: Convert to fraction form
    19,105.64/28,663.76 = 8,009.72/x
  3. Step 3: Cross multiply
    19,105.64x = 28,663.76 × 8,009.72
  4. Step 4: Simplify right side
    19,105.64x = 229,588,691.75
  5. Step 5: Solve for x
    x = 229,588,691.75/19,105.64
  6. Step 6: Final answer
    x = 12,016.80

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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.