Home / 28,919.60-39,905.96-16,171.46

Finding the Fourth Proportional to 28,919.60, 39,905.96 and 16,171.46

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Solution

The fourth proportional to 28,919.60, 39,905.96 and 16,171.46 is: 22,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.60 : 39,905.96 = 16,171.46 : x
  2. Step 2: Convert to fraction form
    28,919.60/39,905.96 = 16,171.46/x
  3. Step 3: Cross multiply
    28,919.60x = 39,905.96 × 16,171.46
  4. Step 4: Simplify right side
    28,919.60x = 645,337,355.51
  5. Step 5: Solve for x
    x = 645,337,355.51/28,919.60
  6. Step 6: Final answer
    x = 22,314.88

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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.