Home / 38,680.68-58,011.57-12,379.98

Finding the Fourth Proportional to 38,680.68, 58,011.57 and 12,379.98

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Solution

The fourth proportional to 38,680.68, 58,011.57 and 12,379.98 is: 18,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,680.68 : 58,011.57 = 12,379.98 : x
  2. Step 2: Convert to fraction form
    38,680.68/58,011.57 = 12,379.98/x
  3. Step 3: Cross multiply
    38,680.68x = 58,011.57 × 12,379.98
  4. Step 4: Simplify right side
    38,680.68x = 718,182,076.37
  5. Step 5: Solve for x
    x = 718,182,076.37/38,680.68
  6. Step 6: Final answer
    x = 18,566.95

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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.