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Finding the Fourth Proportional to 30,630.66, 42,310.86 and 22,713.72

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Solution

The fourth proportional to 30,630.66, 42,310.86 and 22,713.72 is: 31,375.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.66 : 42,310.86 = 22,713.72 : x
  2. Step 2: Convert to fraction form
    30,630.66/42,310.86 = 22,713.72/x
  3. Step 3: Cross multiply
    30,630.66x = 42,310.86 × 22,713.72
  4. Step 4: Simplify right side
    30,630.66x = 961,037,027.00
  5. Step 5: Solve for x
    x = 961,037,027.00/30,630.66
  6. Step 6: Final answer
    x = 31,375.00

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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.