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Finding the Fourth Proportional to 30,618.83, 45,928.26 and 8,432.44

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Solution

The fourth proportional to 30,618.83, 45,928.26 and 8,432.44 is: 12,648.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.83 : 45,928.26 = 8,432.44 : x
  2. Step 2: Convert to fraction form
    30,618.83/45,928.26 = 8,432.44/x
  3. Step 3: Cross multiply
    30,618.83x = 45,928.26 × 8,432.44
  4. Step 4: Simplify right side
    30,618.83x = 387,287,181.93
  5. Step 5: Solve for x
    x = 387,287,181.93/30,618.83
  6. Step 6: Final answer
    x = 12,648.66

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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.