Home / 39,890.15-59,835.85-11,813.05

Finding the Fourth Proportional to 39,890.15, 59,835.85 and 11,813.05

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Solution

The fourth proportional to 39,890.15, 59,835.85 and 11,813.05 is: 17,719.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.15 : 59,835.85 = 11,813.05 : x
  2. Step 2: Convert to fraction form
    39,890.15/59,835.85 = 11,813.05/x
  3. Step 3: Cross multiply
    39,890.15x = 59,835.85 × 11,813.05
  4. Step 4: Simplify right side
    39,890.15x = 706,843,992.33
  5. Step 5: Solve for x
    x = 706,843,992.33/39,890.15
  6. Step 6: Final answer
    x = 17,719.76

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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.