Home / 12,168.89-18,253.12-3,403.69

Finding the Fourth Proportional to 12,168.89, 18,253.12 and 3,403.69

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Solution

The fourth proportional to 12,168.89, 18,253.12 and 3,403.69 is: 5,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.89 : 18,253.12 = 3,403.69 : x
  2. Step 2: Convert to fraction form
    12,168.89/18,253.12 = 3,403.69/x
  3. Step 3: Cross multiply
    12,168.89x = 18,253.12 × 3,403.69
  4. Step 4: Simplify right side
    12,168.89x = 62,127,962.01
  5. Step 5: Solve for x
    x = 62,127,962.01/12,168.89
  6. Step 6: Final answer
    x = 5,105.47

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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.