Home / 13,859.72-20,790.92-5,537.76

Finding the Fourth Proportional to 13,859.72, 20,790.92 and 5,537.76

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Solution

The fourth proportional to 13,859.72, 20,790.92 and 5,537.76 is: 8,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.72 : 20,790.92 = 5,537.76 : x
  2. Step 2: Convert to fraction form
    13,859.72/20,790.92 = 5,537.76/x
  3. Step 3: Cross multiply
    13,859.72x = 20,790.92 × 5,537.76
  4. Step 4: Simplify right side
    13,859.72x = 115,135,125.14
  5. Step 5: Solve for x
    x = 115,135,125.14/13,859.72
  6. Step 6: Final answer
    x = 8,307.18

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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.