Home / 28,705.76-43,018.54-13,910.75

Finding the Fourth Proportional to 28,705.76, 43,018.54 and 13,910.75

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Solution

The fourth proportional to 28,705.76, 43,018.54 and 13,910.75 is: 20,846.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.76 : 43,018.54 = 13,910.75 : x
  2. Step 2: Convert to fraction form
    28,705.76/43,018.54 = 13,910.75/x
  3. Step 3: Cross multiply
    28,705.76x = 43,018.54 × 13,910.75
  4. Step 4: Simplify right side
    28,705.76x = 598,420,155.31
  5. Step 5: Solve for x
    x = 598,420,155.31/28,705.76
  6. Step 6: Final answer
    x = 20,846.69

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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.