Home / 20,940.06-28,897.83-11,508.87

Finding the Fourth Proportional to 20,940.06, 28,897.83 and 11,508.87

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Solution

The fourth proportional to 20,940.06, 28,897.83 and 11,508.87 is: 15,882.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.06 : 28,897.83 = 11,508.87 : x
  2. Step 2: Convert to fraction form
    20,940.06/28,897.83 = 11,508.87/x
  3. Step 3: Cross multiply
    20,940.06x = 28,897.83 × 11,508.87
  4. Step 4: Simplify right side
    20,940.06x = 332,581,368.75
  5. Step 5: Solve for x
    x = 332,581,368.75/20,940.06
  6. Step 6: Final answer
    x = 15,882.54

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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.