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Finding the Fourth Proportional to 19,876.20, 29,811.06 and 6,727.20

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Solution

The fourth proportional to 19,876.20, 29,811.06 and 6,727.20 is: 10,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.20 : 29,811.06 = 6,727.20 : x
  2. Step 2: Convert to fraction form
    19,876.20/29,811.06 = 6,727.20/x
  3. Step 3: Cross multiply
    19,876.20x = 29,811.06 × 6,727.20
  4. Step 4: Simplify right side
    19,876.20x = 200,544,962.83
  5. Step 5: Solve for x
    x = 200,544,962.83/19,876.20
  6. Step 6: Final answer
    x = 10,089.70

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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.