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Finding the Fourth Proportional to 30,645.66, 45,945.08 and 15,845.12

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Solution

The fourth proportional to 30,645.66, 45,945.08 and 15,845.12 is: 23,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.66 : 45,945.08 = 15,845.12 : x
  2. Step 2: Convert to fraction form
    30,645.66/45,945.08 = 15,845.12/x
  3. Step 3: Cross multiply
    30,645.66x = 45,945.08 × 15,845.12
  4. Step 4: Simplify right side
    30,645.66x = 728,005,306.01
  5. Step 5: Solve for x
    x = 728,005,306.01/30,645.66
  6. Step 6: Final answer
    x = 23,755.58

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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.