Home / 13,889.72-20,830.26-4,653.56

Finding the Fourth Proportional to 13,889.72, 20,830.26 and 4,653.56

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Solution

The fourth proportional to 13,889.72, 20,830.26 and 4,653.56 is: 6,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.72 : 20,830.26 = 4,653.56 : x
  2. Step 2: Convert to fraction form
    13,889.72/20,830.26 = 4,653.56/x
  3. Step 3: Cross multiply
    13,889.72x = 20,830.26 × 4,653.56
  4. Step 4: Simplify right side
    13,889.72x = 96,934,916.80
  5. Step 5: Solve for x
    x = 96,934,916.80/13,889.72
  6. Step 6: Final answer
    x = 6,978.90

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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.