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Finding the Fourth Proportional to 30,555.62, 45,845.06 and 15,755.09

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Solution

The fourth proportional to 30,555.62, 45,845.06 and 15,755.09 is: 23,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.62 : 45,845.06 = 15,755.09 : x
  2. Step 2: Convert to fraction form
    30,555.62/45,845.06 = 15,755.09/x
  3. Step 3: Cross multiply
    30,555.62x = 45,845.06 × 15,755.09
  4. Step 4: Simplify right side
    30,555.62x = 722,292,738.35
  5. Step 5: Solve for x
    x = 722,292,738.35/30,555.62
  6. Step 6: Final answer
    x = 23,638.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.