Home / 28,788.27-43,171.02-13,992.81

Finding the Fourth Proportional to 28,788.27, 43,171.02 and 13,992.81

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Solution

The fourth proportional to 28,788.27, 43,171.02 and 13,992.81 is: 20,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,788.27 : 43,171.02 = 13,992.81 : x
  2. Step 2: Convert to fraction form
    28,788.27/43,171.02 = 13,992.81/x
  3. Step 3: Cross multiply
    28,788.27x = 43,171.02 × 13,992.81
  4. Step 4: Simplify right side
    28,788.27x = 604,083,880.37
  5. Step 5: Solve for x
    x = 604,083,880.37/28,788.27
  6. Step 6: Final answer
    x = 20,983.68

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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.