Home / 18,895.92-28,345.80-7,218.96

Finding the Fourth Proportional to 18,895.92, 28,345.80 and 7,218.96

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Solution

The fourth proportional to 18,895.92, 28,345.80 and 7,218.96 is: 10,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.92 : 28,345.80 = 7,218.96 : x
  2. Step 2: Convert to fraction form
    18,895.92/28,345.80 = 7,218.96/x
  3. Step 3: Cross multiply
    18,895.92x = 28,345.80 × 7,218.96
  4. Step 4: Simplify right side
    18,895.92x = 204,627,196.37
  5. Step 5: Solve for x
    x = 204,627,196.37/18,895.92
  6. Step 6: Final answer
    x = 10,829.17

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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.