Home / 12,126.48-18,187.72-3,362.28

Finding the Fourth Proportional to 12,126.48, 18,187.72 and 3,362.28

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Solution

The fourth proportional to 12,126.48, 18,187.72 and 3,362.28 is: 5,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.48 : 18,187.72 = 3,362.28 : x
  2. Step 2: Convert to fraction form
    12,126.48/18,187.72 = 3,362.28/x
  3. Step 3: Cross multiply
    12,126.48x = 18,187.72 × 3,362.28
  4. Step 4: Simplify right side
    12,126.48x = 61,152,207.20
  5. Step 5: Solve for x
    x = 61,152,207.20/12,126.48
  6. Step 6: Final answer
    x = 5,042.87

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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.