Home / 19,775.75-29,663.92-7,930.56

Finding the Fourth Proportional to 19,775.75, 29,663.92 and 7,930.56

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Solution

The fourth proportional to 19,775.75, 29,663.92 and 7,930.56 is: 11,895.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.75 : 29,663.92 = 7,930.56 : x
  2. Step 2: Convert to fraction form
    19,775.75/29,663.92 = 7,930.56/x
  3. Step 3: Cross multiply
    19,775.75x = 29,663.92 × 7,930.56
  4. Step 4: Simplify right side
    19,775.75x = 235,251,451.69
  5. Step 5: Solve for x
    x = 235,251,451.69/19,775.75
  6. Step 6: Final answer
    x = 11,895.96

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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.