Home / 19,961.28-29,935.83-8,271.75

Finding the Fourth Proportional to 19,961.28, 29,935.83 and 8,271.75

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Solution

The fourth proportional to 19,961.28, 29,935.83 and 8,271.75 is: 12,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.28 : 29,935.83 = 8,271.75 : x
  2. Step 2: Convert to fraction form
    19,961.28/29,935.83 = 8,271.75/x
  3. Step 3: Cross multiply
    19,961.28x = 29,935.83 × 8,271.75
  4. Step 4: Simplify right side
    19,961.28x = 247,621,701.80
  5. Step 5: Solve for x
    x = 247,621,701.80/19,961.28
  6. Step 6: Final answer
    x = 12,405.10

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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.