Home / 18,949.36-28,424.79-7,101.90

Finding the Fourth Proportional to 18,949.36, 28,424.79 and 7,101.90

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Solution

The fourth proportional to 18,949.36, 28,424.79 and 7,101.90 is: 10,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.36 : 28,424.79 = 7,101.90 : x
  2. Step 2: Convert to fraction form
    18,949.36/28,424.79 = 7,101.90/x
  3. Step 3: Cross multiply
    18,949.36x = 28,424.79 × 7,101.90
  4. Step 4: Simplify right side
    18,949.36x = 201,870,016.10
  5. Step 5: Solve for x
    x = 201,870,016.10/18,949.36
  6. Step 6: Final answer
    x = 10,653.13

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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.