Home / 11,839.54-16,337.38-7,647.78

Finding the Fourth Proportional to 11,839.54, 16,337.38 and 7,647.78

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Solution

The fourth proportional to 11,839.54, 16,337.38 and 7,647.78 is: 10,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,839.54 : 16,337.38 = 7,647.78 : x
  2. Step 2: Convert to fraction form
    11,839.54/16,337.38 = 7,647.78/x
  3. Step 3: Cross multiply
    11,839.54x = 16,337.38 × 7,647.78
  4. Step 4: Simplify right side
    11,839.54x = 124,944,688.02
  5. Step 5: Solve for x
    x = 124,944,688.02/11,839.54
  6. Step 6: Final answer
    x = 10,553.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.