Home / 13,600.74-20,398.76-3,605.55

Finding the Fourth Proportional to 13,600.74, 20,398.76 and 3,605.55

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Solution

The fourth proportional to 13,600.74, 20,398.76 and 3,605.55 is: 5,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.74 : 20,398.76 = 3,605.55 : x
  2. Step 2: Convert to fraction form
    13,600.74/20,398.76 = 3,605.55/x
  3. Step 3: Cross multiply
    13,600.74x = 20,398.76 × 3,605.55
  4. Step 4: Simplify right side
    13,600.74x = 73,548,809.13
  5. Step 5: Solve for x
    x = 73,548,809.13/13,600.74
  6. Step 6: Final answer
    x = 5,407.71

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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.