Home / 19,947.45-29,794.91-15,518.78

Finding the Fourth Proportional to 19,947.45, 29,794.91 and 15,518.78

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Solution

The fourth proportional to 19,947.45, 29,794.91 and 15,518.78 is: 23,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.45 : 29,794.91 = 15,518.78 : x
  2. Step 2: Convert to fraction form
    19,947.45/29,794.91 = 15,518.78/x
  3. Step 3: Cross multiply
    19,947.45x = 29,794.91 × 15,518.78
  4. Step 4: Simplify right side
    19,947.45x = 462,380,653.41
  5. Step 5: Solve for x
    x = 462,380,653.41/19,947.45
  6. Step 6: Final answer
    x = 23,179.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.