Home / 18,618.45-27,920.98-7,371.19

Finding the Fourth Proportional to 18,618.45, 27,920.98 and 7,371.19

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Solution

The fourth proportional to 18,618.45, 27,920.98 and 7,371.19 is: 11,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.45 : 27,920.98 = 7,371.19 : x
  2. Step 2: Convert to fraction form
    18,618.45/27,920.98 = 7,371.19/x
  3. Step 3: Cross multiply
    18,618.45x = 27,920.98 × 7,371.19
  4. Step 4: Simplify right side
    18,618.45x = 205,810,848.57
  5. Step 5: Solve for x
    x = 205,810,848.57/18,618.45
  6. Step 6: Final answer
    x = 11,054.13

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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.