Home / 13,641.50-20,467.05-6,720.86

Finding the Fourth Proportional to 13,641.50, 20,467.05 and 6,720.86

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Solution

The fourth proportional to 13,641.50, 20,467.05 and 6,720.86 is: 10,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.50 : 20,467.05 = 6,720.86 : x
  2. Step 2: Convert to fraction form
    13,641.50/20,467.05 = 6,720.86/x
  3. Step 3: Cross multiply
    13,641.50x = 20,467.05 × 6,720.86
  4. Step 4: Simplify right side
    13,641.50x = 137,556,177.66
  5. Step 5: Solve for x
    x = 137,556,177.66/13,641.50
  6. Step 6: Final answer
    x = 10,083.65

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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.