Home / 39,109.11-58,671.84-12,811.79

Finding the Fourth Proportional to 39,109.11, 58,671.84 and 12,811.79

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Solution

The fourth proportional to 39,109.11, 58,671.84 and 12,811.79 is: 19,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109.11 : 58,671.84 = 12,811.79 : x
  2. Step 2: Convert to fraction form
    39,109.11/58,671.84 = 12,811.79/x
  3. Step 3: Cross multiply
    39,109.11x = 58,671.84 × 12,811.79
  4. Step 4: Simplify right side
    39,109.11x = 751,690,999.63
  5. Step 5: Solve for x
    x = 751,690,999.63/39,109.11
  6. Step 6: Final answer
    x = 19,220.36

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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.