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Finding the Fourth Proportional to 30,589.38, 45,878.90 and 8,397.61

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Solution

The fourth proportional to 30,589.38, 45,878.90 and 8,397.61 is: 12,594.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.38 : 45,878.90 = 8,397.61 : x
  2. Step 2: Convert to fraction form
    30,589.38/45,878.90 = 8,397.61/x
  3. Step 3: Cross multiply
    30,589.38x = 45,878.90 × 8,397.61
  4. Step 4: Simplify right side
    30,589.38x = 385,272,952.74
  5. Step 5: Solve for x
    x = 385,272,952.74/30,589.38
  6. Step 6: Final answer
    x = 12,594.99

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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.