Home / 39,839.49-59,769-12,137.49

Finding the Fourth Proportional to 39,839.49, 59,769 and 12,137.49

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Solution

The fourth proportional to 39,839.49, 59,769 and 12,137.49 is: 18,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,839.49 : 59,769 = 12,137.49 : x
  2. Step 2: Convert to fraction form
    39,839.49/59,769 = 12,137.49/x
  3. Step 3: Cross multiply
    39,839.49x = 59,769 × 12,137.49
  4. Step 4: Simplify right side
    39,839.49x = 725,445,639.81
  5. Step 5: Solve for x
    x = 725,445,639.81/39,839.49
  6. Step 6: Final answer
    x = 18,209.21

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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.