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Finding the Fourth Proportional to 30,392.90, 45,589.27 and 8,208.48

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Solution

The fourth proportional to 30,392.90, 45,589.27 and 8,208.48 is: 12,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.90 : 45,589.27 = 8,208.48 : x
  2. Step 2: Convert to fraction form
    30,392.90/45,589.27 = 8,208.48/x
  3. Step 3: Cross multiply
    30,392.90x = 45,589.27 × 8,208.48
  4. Step 4: Simplify right side
    30,392.90x = 374,218,611.01
  5. Step 5: Solve for x
    x = 374,218,611.01/30,392.90
  6. Step 6: Final answer
    x = 12,312.70

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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.