Home / 19,620.40-29,420.52-5,767.60

Finding the Fourth Proportional to 19,620.40, 29,420.52 and 5,767.60

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Solution

The fourth proportional to 19,620.40, 29,420.52 and 5,767.60 is: 8,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.40 : 29,420.52 = 5,767.60 : x
  2. Step 2: Convert to fraction form
    19,620.40/29,420.52 = 5,767.60/x
  3. Step 3: Cross multiply
    19,620.40x = 29,420.52 × 5,767.60
  4. Step 4: Simplify right side
    19,620.40x = 169,685,791.15
  5. Step 5: Solve for x
    x = 169,685,791.15/19,620.40
  6. Step 6: Final answer
    x = 8,648.44

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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.