Home / 11,943.79-17,918.75-8,440.75

Finding the Fourth Proportional to 11,943.79, 17,918.75 and 8,440.75

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Solution

The fourth proportional to 11,943.79, 17,918.75 and 8,440.75 is: 12,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.79 : 17,918.75 = 8,440.75 : x
  2. Step 2: Convert to fraction form
    11,943.79/17,918.75 = 8,440.75/x
  3. Step 3: Cross multiply
    11,943.79x = 17,918.75 × 8,440.75
  4. Step 4: Simplify right side
    11,943.79x = 151,247,646.86
  5. Step 5: Solve for x
    x = 151,247,646.86/11,943.79
  6. Step 6: Final answer
    x = 12,663.29

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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.