Home / 19,911.20-29,863.52-7,427.96

Finding the Fourth Proportional to 19,911.20, 29,863.52 and 7,427.96

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Solution

The fourth proportional to 19,911.20, 29,863.52 and 7,427.96 is: 11,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.20 : 29,863.52 = 7,427.96 : x
  2. Step 2: Convert to fraction form
    19,911.20/29,863.52 = 7,427.96/x
  3. Step 3: Cross multiply
    19,911.20x = 29,863.52 × 7,427.96
  4. Step 4: Simplify right side
    19,911.20x = 221,825,032.02
  5. Step 5: Solve for x
    x = 221,825,032.02/19,911.20
  6. Step 6: Final answer
    x = 11,140.72

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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.