Home / 19,876.59-29,816.10-8,190.72

Finding the Fourth Proportional to 19,876.59, 29,816.10 and 8,190.72

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Solution

The fourth proportional to 19,876.59, 29,816.10 and 8,190.72 is: 12,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.59 : 29,816.10 = 8,190.72 : x
  2. Step 2: Convert to fraction form
    19,876.59/29,816.10 = 8,190.72/x
  3. Step 3: Cross multiply
    19,876.59x = 29,816.10 × 8,190.72
  4. Step 4: Simplify right side
    19,876.59x = 244,215,326.59
  5. Step 5: Solve for x
    x = 244,215,326.59/19,876.59
  6. Step 6: Final answer
    x = 12,286.58

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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.