Home / 39,716.81-59,583.78-13,420.97

Finding the Fourth Proportional to 39,716.81, 59,583.78 and 13,420.97

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Solution

The fourth proportional to 39,716.81, 59,583.78 and 13,420.97 is: 20,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.81 : 59,583.78 = 13,420.97 : x
  2. Step 2: Convert to fraction form
    39,716.81/59,583.78 = 13,420.97/x
  3. Step 3: Cross multiply
    39,716.81x = 59,583.78 × 13,420.97
  4. Step 4: Simplify right side
    39,716.81x = 799,671,825.95
  5. Step 5: Solve for x
    x = 799,671,825.95/39,716.81
  6. Step 6: Final answer
    x = 20,134.34

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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.