Home / 19,906.20-29,832.30-12,864.60

Finding the Fourth Proportional to 19,906.20, 29,832.30 and 12,864.60

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Solution

The fourth proportional to 19,906.20, 29,832.30 and 12,864.60 is: 19,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.20 : 29,832.30 = 12,864.60 : x
  2. Step 2: Convert to fraction form
    19,906.20/29,832.30 = 12,864.60/x
  3. Step 3: Cross multiply
    19,906.20x = 29,832.30 × 12,864.60
  4. Step 4: Simplify right side
    19,906.20x = 383,780,606.58
  5. Step 5: Solve for x
    x = 383,780,606.58/19,906.20
  6. Step 6: Final answer
    x = 19,279.45

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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.