Home / 38,680.11-58,028.85-12,386.43

Finding the Fourth Proportional to 38,680.11, 58,028.85 and 12,386.43

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Solution

The fourth proportional to 38,680.11, 58,028.85 and 12,386.43 is: 18,582.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,680.11 : 58,028.85 = 12,386.43 : x
  2. Step 2: Convert to fraction form
    38,680.11/58,028.85 = 12,386.43/x
  3. Step 3: Cross multiply
    38,680.11x = 58,028.85 × 12,386.43
  4. Step 4: Simplify right side
    38,680.11x = 718,770,288.51
  5. Step 5: Solve for x
    x = 718,770,288.51/38,680.11
  6. Step 6: Final answer
    x = 18,582.43

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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.