Home / 39,781.01-59,658.77-13,121.01

Finding the Fourth Proportional to 39,781.01, 59,658.77 and 13,121.01

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Solution

The fourth proportional to 39,781.01, 59,658.77 and 13,121.01 is: 19,677.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,781.01 : 59,658.77 = 13,121.01 : x
  2. Step 2: Convert to fraction form
    39,781.01/59,658.77 = 13,121.01/x
  3. Step 3: Cross multiply
    39,781.01x = 59,658.77 × 13,121.01
  4. Step 4: Simplify right side
    39,781.01x = 782,783,252.15
  5. Step 5: Solve for x
    x = 782,783,252.15/39,781.01
  6. Step 6: Final answer
    x = 19,677.31

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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.