Home / 38,690.11-58,043.85-12,396.43

Finding the Fourth Proportional to 38,690.11, 58,043.85 and 12,396.43

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Solution

The fourth proportional to 38,690.11, 58,043.85 and 12,396.43 is: 18,597.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.11 : 58,043.85 = 12,396.43 : x
  2. Step 2: Convert to fraction form
    38,690.11/58,043.85 = 12,396.43/x
  3. Step 3: Cross multiply
    38,690.11x = 58,043.85 × 12,396.43
  4. Step 4: Simplify right side
    38,690.11x = 719,536,523.46
  5. Step 5: Solve for x
    x = 719,536,523.46/38,690.11
  6. Step 6: Final answer
    x = 18,597.43

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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.