Home / 39,420-59,112.18-11,333.61

Finding the Fourth Proportional to 39,420, 59,112.18 and 11,333.61

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Solution

The fourth proportional to 39,420, 59,112.18 and 11,333.61 is: 16,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420 : 59,112.18 = 11,333.61 : x
  2. Step 2: Convert to fraction form
    39,420/59,112.18 = 11,333.61/x
  3. Step 3: Cross multiply
    39,420x = 59,112.18 × 11,333.61
  4. Step 4: Simplify right side
    39,420x = 669,954,394.37
  5. Step 5: Solve for x
    x = 669,954,394.37/39,420
  6. Step 6: Final answer
    x = 16,995.29

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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.