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Finding the Fourth Proportional to 39,459.69, 59,187.92 and 21,918.33

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Solution

The fourth proportional to 39,459.69, 59,187.92 and 21,918.33 is: 32,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,459.69 : 59,187.92 = 21,918.33 : x
  2. Step 2: Convert to fraction form
    39,459.69/59,187.92 = 21,918.33/x
  3. Step 3: Cross multiply
    39,459.69x = 59,187.92 × 21,918.33
  4. Step 4: Simplify right side
    39,459.69x = 1,297,300,252.98
  5. Step 5: Solve for x
    x = 1,297,300,252.98/39,459.69
  6. Step 6: Final answer
    x = 32,876.60

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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.