Home / 20,321.33-28,045.74-11,371.10

Finding the Fourth Proportional to 20,321.33, 28,045.74 and 11,371.10

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Solution

The fourth proportional to 20,321.33, 28,045.74 and 11,371.10 is: 15,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.33 : 28,045.74 = 11,371.10 : x
  2. Step 2: Convert to fraction form
    20,321.33/28,045.74 = 11,371.10/x
  3. Step 3: Cross multiply
    20,321.33x = 28,045.74 × 11,371.10
  4. Step 4: Simplify right side
    20,321.33x = 318,910,773.89
  5. Step 5: Solve for x
    x = 318,910,773.89/20,321.33
  6. Step 6: Final answer
    x = 15,693.40

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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.