Home / 19,786.78-29,680.10-8,100.02

Finding the Fourth Proportional to 19,786.78, 29,680.10 and 8,100.02

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Solution

The fourth proportional to 19,786.78, 29,680.10 and 8,100.02 is: 12,150.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.78 : 29,680.10 = 8,100.02 : x
  2. Step 2: Convert to fraction form
    19,786.78/29,680.10 = 8,100.02/x
  3. Step 3: Cross multiply
    19,786.78x = 29,680.10 × 8,100.02
  4. Step 4: Simplify right side
    19,786.78x = 240,409,403.60
  5. Step 5: Solve for x
    x = 240,409,403.60/19,786.78
  6. Step 6: Final answer
    x = 12,150.00

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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.