Home / 20,521.62-28,317.31-11,444.85

Finding the Fourth Proportional to 20,521.62, 28,317.31 and 11,444.85

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Solution

The fourth proportional to 20,521.62, 28,317.31 and 11,444.85 is: 15,792.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.62 : 28,317.31 = 11,444.85 : x
  2. Step 2: Convert to fraction form
    20,521.62/28,317.31 = 11,444.85/x
  3. Step 3: Cross multiply
    20,521.62x = 28,317.31 × 11,444.85
  4. Step 4: Simplify right side
    20,521.62x = 324,087,336.74
  5. Step 5: Solve for x
    x = 324,087,336.74/20,521.62
  6. Step 6: Final answer
    x = 15,792.49

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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.