Home / 19,829.20-29,734.38-11,511.78

Finding the Fourth Proportional to 19,829.20, 29,734.38 and 11,511.78

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Solution

The fourth proportional to 19,829.20, 29,734.38 and 11,511.78 is: 17,262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,829.20 : 29,734.38 = 11,511.78 : x
  2. Step 2: Convert to fraction form
    19,829.20/29,734.38 = 11,511.78/x
  3. Step 3: Cross multiply
    19,829.20x = 29,734.38 × 11,511.78
  4. Step 4: Simplify right side
    19,829.20x = 342,295,641.00
  5. Step 5: Solve for x
    x = 342,295,641.00/19,829.20
  6. Step 6: Final answer
    x = 17,262.20

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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.