Home / 38,679.71-58,020.38-12,384.38

Finding the Fourth Proportional to 38,679.71, 58,020.38 and 12,384.38

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Solution

The fourth proportional to 38,679.71, 58,020.38 and 12,384.38 is: 18,576.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.71 : 58,020.38 = 12,384.38 : x
  2. Step 2: Convert to fraction form
    38,679.71/58,020.38 = 12,384.38/x
  3. Step 3: Cross multiply
    38,679.71x = 58,020.38 × 12,384.38
  4. Step 4: Simplify right side
    38,679.71x = 718,546,433.66
  5. Step 5: Solve for x
    x = 718,546,433.66/38,679.71
  6. Step 6: Final answer
    x = 18,576.83

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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.