Home / 19,747.72-29,607.60-9,879.92

Finding the Fourth Proportional to 19,747.72, 29,607.60 and 9,879.92

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Solution

The fourth proportional to 19,747.72, 29,607.60 and 9,879.92 is: 14,812.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,747.72 : 29,607.60 = 9,879.92 : x
  2. Step 2: Convert to fraction form
    19,747.72/29,607.60 = 9,879.92/x
  3. Step 3: Cross multiply
    19,747.72x = 29,607.60 × 9,879.92
  4. Step 4: Simplify right side
    19,747.72x = 292,520,719.39
  5. Step 5: Solve for x
    x = 292,520,719.39/19,747.72
  6. Step 6: Final answer
    x = 14,812.89

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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.