Home / 12,518.48-18,781.36-5,935.61

Finding the Fourth Proportional to 12,518.48, 18,781.36 and 5,935.61

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Solution

The fourth proportional to 12,518.48, 18,781.36 and 5,935.61 is: 8,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.48 : 18,781.36 = 5,935.61 : x
  2. Step 2: Convert to fraction form
    12,518.48/18,781.36 = 5,935.61/x
  3. Step 3: Cross multiply
    12,518.48x = 18,781.36 × 5,935.61
  4. Step 4: Simplify right side
    12,518.48x = 111,478,719.48
  5. Step 5: Solve for x
    x = 111,478,719.48/12,518.48
  6. Step 6: Final answer
    x = 8,905.14

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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.