Home / 20,679.62-28,537.96-11,248.24

Finding the Fourth Proportional to 20,679.62, 28,537.96 and 11,248.24

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Solution

The fourth proportional to 20,679.62, 28,537.96 and 11,248.24 is: 15,522.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.62 : 28,537.96 = 11,248.24 : x
  2. Step 2: Convert to fraction form
    20,679.62/28,537.96 = 11,248.24/x
  3. Step 3: Cross multiply
    20,679.62x = 28,537.96 × 11,248.24
  4. Step 4: Simplify right side
    20,679.62x = 321,001,823.19
  5. Step 5: Solve for x
    x = 321,001,823.19/20,679.62
  6. Step 6: Final answer
    x = 15,522.62

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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.