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Finding the Fourth Proportional to 30,808.60, 46,212.90 and 8,625.24

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Solution

The fourth proportional to 30,808.60, 46,212.90 and 8,625.24 is: 12,937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.60 : 46,212.90 = 8,625.24 : x
  2. Step 2: Convert to fraction form
    30,808.60/46,212.90 = 8,625.24/x
  3. Step 3: Cross multiply
    30,808.60x = 46,212.90 × 8,625.24
  4. Step 4: Simplify right side
    30,808.60x = 398,597,369.77
  5. Step 5: Solve for x
    x = 398,597,369.77/30,808.60
  6. Step 6: Final answer
    x = 12,937.86

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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.