Home / 38,786.40-58,179.54-12,495

Finding the Fourth Proportional to 38,786.40, 58,179.54 and 12,495

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Solution

The fourth proportional to 38,786.40, 58,179.54 and 12,495 is: 18,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.40 : 58,179.54 = 12,495 : x
  2. Step 2: Convert to fraction form
    38,786.40/58,179.54 = 12,495/x
  3. Step 3: Cross multiply
    38,786.40x = 58,179.54 × 12,495
  4. Step 4: Simplify right side
    38,786.40x = 726,953,352.30
  5. Step 5: Solve for x
    x = 726,953,352.30/38,786.40
  6. Step 6: Final answer
    x = 18,742.48

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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.