Home / 19,788.78-29,683.10-8,102.02

Finding the Fourth Proportional to 19,788.78, 29,683.10 and 8,102.02

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Solution

The fourth proportional to 19,788.78, 29,683.10 and 8,102.02 is: 12,153.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.78 : 29,683.10 = 8,102.02 : x
  2. Step 2: Convert to fraction form
    19,788.78/29,683.10 = 8,102.02/x
  3. Step 3: Cross multiply
    19,788.78x = 29,683.10 × 8,102.02
  4. Step 4: Simplify right side
    19,788.78x = 240,493,069.86
  5. Step 5: Solve for x
    x = 240,493,069.86/19,788.78
  6. Step 6: Final answer
    x = 12,153.00

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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.