Home / 19,947.45-29,921.07-5,155.11

Finding the Fourth Proportional to 19,947.45, 29,921.07 and 5,155.11

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Solution

The fourth proportional to 19,947.45, 29,921.07 and 5,155.11 is: 7,732.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.45 : 29,921.07 = 5,155.11 : x
  2. Step 2: Convert to fraction form
    19,947.45/29,921.07 = 5,155.11/x
  3. Step 3: Cross multiply
    19,947.45x = 29,921.07 × 5,155.11
  4. Step 4: Simplify right side
    19,947.45x = 154,246,257.56
  5. Step 5: Solve for x
    x = 154,246,257.56/19,947.45
  6. Step 6: Final answer
    x = 7,732.63

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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.