Home / 12,128.48-18,192.73-3,363.40

Finding the Fourth Proportional to 12,128.48, 18,192.73 and 3,363.40

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Solution

The fourth proportional to 12,128.48, 18,192.73 and 3,363.40 is: 5,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.48 : 18,192.73 = 3,363.40 : x
  2. Step 2: Convert to fraction form
    12,128.48/18,192.73 = 3,363.40/x
  3. Step 3: Cross multiply
    12,128.48x = 18,192.73 × 3,363.40
  4. Step 4: Simplify right side
    12,128.48x = 61,189,388.09
  5. Step 5: Solve for x
    x = 61,189,388.09/12,128.48
  6. Step 6: Final answer
    x = 5,045.10

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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.