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Finding the Fourth Proportional to 39,408.50, 59,112.75 and 11,706.50

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Solution

The fourth proportional to 39,408.50, 59,112.75 and 11,706.50 is: 17,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.50 : 59,112.75 = 11,706.50 : x
  2. Step 2: Convert to fraction form
    39,408.50/59,112.75 = 11,706.50/x
  3. Step 3: Cross multiply
    39,408.50x = 59,112.75 × 11,706.50
  4. Step 4: Simplify right side
    39,408.50x = 692,003,407.88
  5. Step 5: Solve for x
    x = 692,003,407.88/39,408.50
  6. Step 6: Final answer
    x = 17,559.75

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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.