Home / 15,890.78-23,838.60-5,213.82

Finding the Fourth Proportional to 15,890.78, 23,838.60 and 5,213.82

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Solution

The fourth proportional to 15,890.78, 23,838.60 and 5,213.82 is: 7,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.78 : 23,838.60 = 5,213.82 : x
  2. Step 2: Convert to fraction form
    15,890.78/23,838.60 = 5,213.82/x
  3. Step 3: Cross multiply
    15,890.78x = 23,838.60 × 5,213.82
  4. Step 4: Simplify right side
    15,890.78x = 124,290,169.45
  5. Step 5: Solve for x
    x = 124,290,169.45/15,890.78
  6. Step 6: Final answer
    x = 7,821.53

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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.