Home / 13,949.16-19,249.74-7,661.40

Finding the Fourth Proportional to 13,949.16, 19,249.74 and 7,661.40

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Solution

The fourth proportional to 13,949.16, 19,249.74 and 7,661.40 is: 10,572.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.16 : 19,249.74 = 7,661.40 : x
  2. Step 2: Convert to fraction form
    13,949.16/19,249.74 = 7,661.40/x
  3. Step 3: Cross multiply
    13,949.16x = 19,249.74 × 7,661.40
  4. Step 4: Simplify right side
    13,949.16x = 147,479,958.04
  5. Step 5: Solve for x
    x = 147,479,958.04/13,949.16
  6. Step 6: Final answer
    x = 10,572.68

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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.