Home / 12,403.40-18,606.04-3,518.57

Finding the Fourth Proportional to 12,403.40, 18,606.04 and 3,518.57

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Solution

The fourth proportional to 12,403.40, 18,606.04 and 3,518.57 is: 5,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.40 : 18,606.04 = 3,518.57 : x
  2. Step 2: Convert to fraction form
    12,403.40/18,606.04 = 3,518.57/x
  3. Step 3: Cross multiply
    12,403.40x = 18,606.04 × 3,518.57
  4. Step 4: Simplify right side
    12,403.40x = 65,466,691.88
  5. Step 5: Solve for x
    x = 65,466,691.88/12,403.40
  6. Step 6: Final answer
    x = 5,278.13

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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.