Home / 12,605.22-18,910.66-3,720.46

Finding the Fourth Proportional to 12,605.22, 18,910.66 and 3,720.46

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Solution

The fourth proportional to 12,605.22, 18,910.66 and 3,720.46 is: 5,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.22 : 18,910.66 = 3,720.46 : x
  2. Step 2: Convert to fraction form
    12,605.22/18,910.66 = 3,720.46/x
  3. Step 3: Cross multiply
    12,605.22x = 18,910.66 × 3,720.46
  4. Step 4: Simplify right side
    12,605.22x = 70,356,259.55
  5. Step 5: Solve for x
    x = 70,356,259.55/12,605.22
  6. Step 6: Final answer
    x = 5,581.52

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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.