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Finding the Fourth Proportional to 39,969.96, 59,954.90 and 11,889.90

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Solution

The fourth proportional to 39,969.96, 59,954.90 and 11,889.90 is: 17,834.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.96 : 59,954.90 = 11,889.90 : x
  2. Step 2: Convert to fraction form
    39,969.96/59,954.90 = 11,889.90/x
  3. Step 3: Cross multiply
    39,969.96x = 59,954.90 × 11,889.90
  4. Step 4: Simplify right side
    39,969.96x = 712,857,765.51
  5. Step 5: Solve for x
    x = 712,857,765.51/39,969.96
  6. Step 6: Final answer
    x = 17,834.84

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1.5x scale

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.