Home / 30,845.82-42,522.66-20,217

Finding the Fourth Proportional to 30,845.82, 42,522.66 and 20,217

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Solution

The fourth proportional to 30,845.82, 42,522.66 and 20,217 is: 27,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845.82 : 42,522.66 = 20,217 : x
  2. Step 2: Convert to fraction form
    30,845.82/42,522.66 = 20,217/x
  3. Step 3: Cross multiply
    30,845.82x = 42,522.66 × 20,217
  4. Step 4: Simplify right side
    30,845.82x = 859,680,617.22
  5. Step 5: Solve for x
    x = 859,680,617.22/30,845.82
  6. Step 6: Final answer
    x = 27,870.25

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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.