Home / 21,795.62-30,074.38-12,841.90

Finding the Fourth Proportional to 21,795.62, 30,074.38 and 12,841.90

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Solution

The fourth proportional to 21,795.62, 30,074.38 and 12,841.90 is: 17,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.62 : 30,074.38 = 12,841.90 : x
  2. Step 2: Convert to fraction form
    21,795.62/30,074.38 = 12,841.90/x
  3. Step 3: Cross multiply
    21,795.62x = 30,074.38 × 12,841.90
  4. Step 4: Simplify right side
    21,795.62x = 386,212,073.23
  5. Step 5: Solve for x
    x = 386,212,073.23/21,795.62
  6. Step 6: Final answer
    x = 17,719.71

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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.