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Finding the Fourth Proportional to 30,404.84, 41,937.56 and 20,845.59

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Solution

The fourth proportional to 30,404.84, 41,937.56 and 20,845.59 is: 28,752.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,404.84 : 41,937.56 = 20,845.59 : x
  2. Step 2: Convert to fraction form
    30,404.84/41,937.56 = 20,845.59/x
  3. Step 3: Cross multiply
    30,404.84x = 41,937.56 × 20,845.59
  4. Step 4: Simplify right side
    30,404.84x = 874,213,115.29
  5. Step 5: Solve for x
    x = 874,213,115.29/30,404.84
  6. Step 6: Final answer
    x = 28,752.44

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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.