Home / 39,969.39-59,961.29-19,989.30

Finding the Fourth Proportional to 39,969.39, 59,961.29 and 19,989.30

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Solution

The fourth proportional to 39,969.39, 59,961.29 and 19,989.30 is: 29,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.39 : 59,961.29 = 19,989.30 : x
  2. Step 2: Convert to fraction form
    39,969.39/59,961.29 = 19,989.30/x
  3. Step 3: Cross multiply
    39,969.39x = 59,961.29 × 19,989.30
  4. Step 4: Simplify right side
    39,969.39x = 1,198,584,114.25
  5. Step 5: Solve for x
    x = 1,198,584,114.25/39,969.39
  6. Step 6: Final answer
    x = 29,987.55

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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.