Home / 13,764.78-20,640.65-5,335.23

Finding the Fourth Proportional to 13,764.78, 20,640.65 and 5,335.23

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Solution

The fourth proportional to 13,764.78, 20,640.65 and 5,335.23 is: 8,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.78 : 20,640.65 = 5,335.23 : x
  2. Step 2: Convert to fraction form
    13,764.78/20,640.65 = 5,335.23/x
  3. Step 3: Cross multiply
    13,764.78x = 20,640.65 × 5,335.23
  4. Step 4: Simplify right side
    13,764.78x = 110,122,680.83
  5. Step 5: Solve for x
    x = 110,122,680.83/13,764.78
  6. Step 6: Final answer
    x = 8,000.32

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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.