Home / 39,791.09-59,687.55-13,128.53

Finding the Fourth Proportional to 39,791.09, 59,687.55 and 13,128.53

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Solution

The fourth proportional to 39,791.09, 59,687.55 and 13,128.53 is: 19,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.09 : 59,687.55 = 13,128.53 : x
  2. Step 2: Convert to fraction form
    39,791.09/59,687.55 = 13,128.53/x
  3. Step 3: Cross multiply
    39,791.09x = 59,687.55 × 13,128.53
  4. Step 4: Simplify right side
    39,791.09x = 783,609,492.36
  5. Step 5: Solve for x
    x = 783,609,492.36/39,791.09
  6. Step 6: Final answer
    x = 19,693.09

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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.