Home / 18,750.63-28,112.05-11,353.35

Finding the Fourth Proportional to 18,750.63, 28,112.05 and 11,353.35

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Solution

The fourth proportional to 18,750.63, 28,112.05 and 11,353.35 is: 17,021.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.63 : 28,112.05 = 11,353.35 : x
  2. Step 2: Convert to fraction form
    18,750.63/28,112.05 = 11,353.35/x
  3. Step 3: Cross multiply
    18,750.63x = 28,112.05 × 11,353.35
  4. Step 4: Simplify right side
    18,750.63x = 319,165,942.87
  5. Step 5: Solve for x
    x = 319,165,942.87/18,750.63
  6. Step 6: Final answer
    x = 17,021.61

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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.