Home / 12,380.98-18,574.20-4,589.79

Finding the Fourth Proportional to 12,380.98, 18,574.20 and 4,589.79

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Solution

The fourth proportional to 12,380.98, 18,574.20 and 4,589.79 is: 6,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.98 : 18,574.20 = 4,589.79 : x
  2. Step 2: Convert to fraction form
    12,380.98/18,574.20 = 4,589.79/x
  3. Step 3: Cross multiply
    12,380.98x = 18,574.20 × 4,589.79
  4. Step 4: Simplify right side
    12,380.98x = 85,251,653.55
  5. Step 5: Solve for x
    x = 85,251,653.55/12,380.98
  6. Step 6: Final answer
    x = 6,885.70

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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.