Home / 13,949.07-19,249.86-7,661.45

Finding the Fourth Proportional to 13,949.07, 19,249.86 and 7,661.45

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Solution

The fourth proportional to 13,949.07, 19,249.86 and 7,661.45 is: 10,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.07 : 19,249.86 = 7,661.45 : x
  2. Step 2: Convert to fraction form
    13,949.07/19,249.86 = 7,661.45/x
  3. Step 3: Cross multiply
    13,949.07x = 19,249.86 × 7,661.45
  4. Step 4: Simplify right side
    13,949.07x = 147,481,801.47
  5. Step 5: Solve for x
    x = 147,481,801.47/13,949.07
  6. Step 6: Final answer
    x = 10,572.87

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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.