Home / 28,378.78-42,564.62-11,736.72

Finding the Fourth Proportional to 28,378.78, 42,564.62 and 11,736.72

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Solution

The fourth proportional to 28,378.78, 42,564.62 and 11,736.72 is: 17,603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.78 : 42,564.62 = 11,736.72 : x
  2. Step 2: Convert to fraction form
    28,378.78/42,564.62 = 11,736.72/x
  3. Step 3: Cross multiply
    28,378.78x = 42,564.62 × 11,736.72
  4. Step 4: Simplify right side
    28,378.78x = 499,569,056.19
  5. Step 5: Solve for x
    x = 499,569,056.19/28,378.78
  6. Step 6: Final answer
    x = 17,603.61

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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.