Home / 20,371.23-28,111.79-11,296.54

Finding the Fourth Proportional to 20,371.23, 28,111.79 and 11,296.54

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Solution

The fourth proportional to 20,371.23, 28,111.79 and 11,296.54 is: 15,588.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.23 : 28,111.79 = 11,296.54 : x
  2. Step 2: Convert to fraction form
    20,371.23/28,111.79 = 11,296.54/x
  3. Step 3: Cross multiply
    20,371.23x = 28,111.79 × 11,296.54
  4. Step 4: Simplify right side
    20,371.23x = 317,565,861.69
  5. Step 5: Solve for x
    x = 317,565,861.69/20,371.23
  6. Step 6: Final answer
    x = 15,588.94

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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.