Home / 39,579.80-59,372.78-11,500.30

Finding the Fourth Proportional to 39,579.80, 59,372.78 and 11,500.30

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Solution

The fourth proportional to 39,579.80, 59,372.78 and 11,500.30 is: 17,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.80 : 59,372.78 = 11,500.30 : x
  2. Step 2: Convert to fraction form
    39,579.80/59,372.78 = 11,500.30/x
  3. Step 3: Cross multiply
    39,579.80x = 59,372.78 × 11,500.30
  4. Step 4: Simplify right side
    39,579.80x = 682,804,781.83
  5. Step 5: Solve for x
    x = 682,804,781.83/39,579.80
  6. Step 6: Final answer
    x = 17,251.34

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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.