Home / 12,403.74-18,605.78-3,638.84

Finding the Fourth Proportional to 12,403.74, 18,605.78 and 3,638.84

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Solution

The fourth proportional to 12,403.74, 18,605.78 and 3,638.84 is: 5,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.74 : 18,605.78 = 3,638.84 : x
  2. Step 2: Convert to fraction form
    12,403.74/18,605.78 = 3,638.84/x
  3. Step 3: Cross multiply
    12,403.74x = 18,605.78 × 3,638.84
  4. Step 4: Simplify right side
    12,403.74x = 67,703,372.56
  5. Step 5: Solve for x
    x = 67,703,372.56/12,403.74
  6. Step 6: Final answer
    x = 5,458.30

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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.