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Finding the Fourth Proportional to 28,992.51, 43,505.18 and 12,350.81

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Solution

The fourth proportional to 28,992.51, 43,505.18 and 12,350.81 is: 18,533.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.51 : 43,505.18 = 12,350.81 : x
  2. Step 2: Convert to fraction form
    28,992.51/43,505.18 = 12,350.81/x
  3. Step 3: Cross multiply
    28,992.51x = 43,505.18 × 12,350.81
  4. Step 4: Simplify right side
    28,992.51x = 537,324,212.20
  5. Step 5: Solve for x
    x = 537,324,212.20/28,992.51
  6. Step 6: Final answer
    x = 18,533.21

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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.