Home / 20,396.48-28,146.96-11,443.79

Finding the Fourth Proportional to 20,396.48, 28,146.96 and 11,443.79

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Solution

The fourth proportional to 20,396.48, 28,146.96 and 11,443.79 is: 15,792.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.48 : 28,146.96 = 11,443.79 : x
  2. Step 2: Convert to fraction form
    20,396.48/28,146.96 = 11,443.79/x
  3. Step 3: Cross multiply
    20,396.48x = 28,146.96 × 11,443.79
  4. Step 4: Simplify right side
    20,396.48x = 322,107,899.38
  5. Step 5: Solve for x
    x = 322,107,899.38/20,396.48
  6. Step 6: Final answer
    x = 15,792.33

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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.