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Finding the Fourth Proportional to 39,881.87, 59,807.91 and 13,222.97

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Solution

The fourth proportional to 39,881.87, 59,807.91 and 13,222.97 is: 19,829.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.87 : 59,807.91 = 13,222.97 : x
  2. Step 2: Convert to fraction form
    39,881.87/59,807.91 = 13,222.97/x
  3. Step 3: Cross multiply
    39,881.87x = 59,807.91 × 13,222.97
  4. Step 4: Simplify right side
    39,881.87x = 790,837,984.06
  5. Step 5: Solve for x
    x = 790,837,984.06/39,881.87
  6. Step 6: Final answer
    x = 19,829.51

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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.