Home / 18,897.09-28,350.49-7,211.22

Finding the Fourth Proportional to 18,897.09, 28,350.49 and 7,211.22

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Solution

The fourth proportional to 18,897.09, 28,350.49 and 7,211.22 is: 10,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.09 : 28,350.49 = 7,211.22 : x
  2. Step 2: Convert to fraction form
    18,897.09/28,350.49 = 7,211.22/x
  3. Step 3: Cross multiply
    18,897.09x = 28,350.49 × 7,211.22
  4. Step 4: Simplify right side
    18,897.09x = 204,441,620.50
  5. Step 5: Solve for x
    x = 204,441,620.50/18,897.09
  6. Step 6: Final answer
    x = 10,818.68

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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.