Home / 13,860.38-20,790.56-3,472.12

Finding the Fourth Proportional to 13,860.38, 20,790.56 and 3,472.12

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Solution

The fourth proportional to 13,860.38, 20,790.56 and 3,472.12 is: 5,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.38 : 20,790.56 = 3,472.12 : x
  2. Step 2: Convert to fraction form
    13,860.38/20,790.56 = 3,472.12/x
  3. Step 3: Cross multiply
    13,860.38x = 20,790.56 × 3,472.12
  4. Step 4: Simplify right side
    13,860.38x = 72,187,319.19
  5. Step 5: Solve for x
    x = 72,187,319.19/13,860.38
  6. Step 6: Final answer
    x = 5,208.18

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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.