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Finding the Fourth Proportional to 30,363.15, 45,539.56 and 8,171.58

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Solution

The fourth proportional to 30,363.15, 45,539.56 and 8,171.58 is: 12,255.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.15 : 45,539.56 = 8,171.58 : x
  2. Step 2: Convert to fraction form
    30,363.15/45,539.56 = 8,171.58/x
  3. Step 3: Cross multiply
    30,363.15x = 45,539.56 × 8,171.58
  4. Step 4: Simplify right side
    30,363.15x = 372,130,116.85
  5. Step 5: Solve for x
    x = 372,130,116.85/30,363.15
  6. Step 6: Final answer
    x = 12,255.98

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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.