Home / 19,878.15-29,816.96-5,086.79

Finding the Fourth Proportional to 19,878.15, 29,816.96 and 5,086.79

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Solution

The fourth proportional to 19,878.15, 29,816.96 and 5,086.79 is: 7,630.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.15 : 29,816.96 = 5,086.79 : x
  2. Step 2: Convert to fraction form
    19,878.15/29,816.96 = 5,086.79/x
  3. Step 3: Cross multiply
    19,878.15x = 29,816.96 × 5,086.79
  4. Step 4: Simplify right side
    19,878.15x = 151,672,439.44
  5. Step 5: Solve for x
    x = 151,672,439.44/19,878.15
  6. Step 6: Final answer
    x = 7,630.11

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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.