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Finding the Fourth Proportional to 39,379.50, 59,069.25 and 11,677.50

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Solution

The fourth proportional to 39,379.50, 59,069.25 and 11,677.50 is: 17,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.50 : 59,069.25 = 11,677.50 : x
  2. Step 2: Convert to fraction form
    39,379.50/59,069.25 = 11,677.50/x
  3. Step 3: Cross multiply
    39,379.50x = 59,069.25 × 11,677.50
  4. Step 4: Simplify right side
    39,379.50x = 689,781,166.88
  5. Step 5: Solve for x
    x = 689,781,166.88/39,379.50
  6. Step 6: Final answer
    x = 17,516.25

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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.