Home / 28,891.81-39,871.61-16,317.37

Finding the Fourth Proportional to 28,891.81, 39,871.61 and 16,317.37

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Solution

The fourth proportional to 28,891.81, 39,871.61 and 16,317.37 is: 22,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.81 : 39,871.61 = 16,317.37 : x
  2. Step 2: Convert to fraction form
    28,891.81/39,871.61 = 16,317.37/x
  3. Step 3: Cross multiply
    28,891.81x = 39,871.61 × 16,317.37
  4. Step 4: Simplify right side
    28,891.81x = 650,599,812.87
  5. Step 5: Solve for x
    x = 650,599,812.87/28,891.81
  6. Step 6: Final answer
    x = 22,518.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.