Home / 19,963.20-29,938.80-5,919.92

Finding the Fourth Proportional to 19,963.20, 29,938.80 and 5,919.92

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Solution

The fourth proportional to 19,963.20, 29,938.80 and 5,919.92 is: 8,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.20 : 29,938.80 = 5,919.92 : x
  2. Step 2: Convert to fraction form
    19,963.20/29,938.80 = 5,919.92/x
  3. Step 3: Cross multiply
    19,963.20x = 29,938.80 × 5,919.92
  4. Step 4: Simplify right side
    19,963.20x = 177,235,300.90
  5. Step 5: Solve for x
    x = 177,235,300.90/19,963.20
  6. Step 6: Final answer
    x = 8,878.10

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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.