Home / 13,645.72-20,463.18-8,100.51

Finding the Fourth Proportional to 13,645.72, 20,463.18 and 8,100.51

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Solution

The fourth proportional to 13,645.72, 20,463.18 and 8,100.51 is: 12,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.72 : 20,463.18 = 8,100.51 : x
  2. Step 2: Convert to fraction form
    13,645.72/20,463.18 = 8,100.51/x
  3. Step 3: Cross multiply
    13,645.72x = 20,463.18 × 8,100.51
  4. Step 4: Simplify right side
    13,645.72x = 165,762,194.22
  5. Step 5: Solve for x
    x = 165,762,194.22/13,645.72
  6. Step 6: Final answer
    x = 12,147.56

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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.