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Finding the Fourth Proportional to 30,548.60, 45,821.21 and 8,360.39

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Solution

The fourth proportional to 30,548.60, 45,821.21 and 8,360.39 is: 12,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,548.60 : 45,821.21 = 8,360.39 : x
  2. Step 2: Convert to fraction form
    30,548.60/45,821.21 = 8,360.39/x
  3. Step 3: Cross multiply
    30,548.60x = 45,821.21 × 8,360.39
  4. Step 4: Simplify right side
    30,548.60x = 383,083,321.33
  5. Step 5: Solve for x
    x = 383,083,321.33/30,548.60
  6. Step 6: Final answer
    x = 12,540.13

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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.