Home / 13,418.72-18,516.36-7,676.24

Finding the Fourth Proportional to 13,418.72, 18,516.36 and 7,676.24

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Solution

The fourth proportional to 13,418.72, 18,516.36 and 7,676.24 is: 10,592.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.72 : 18,516.36 = 7,676.24 : x
  2. Step 2: Convert to fraction form
    13,418.72/18,516.36 = 7,676.24/x
  3. Step 3: Cross multiply
    13,418.72x = 18,516.36 × 7,676.24
  4. Step 4: Simplify right side
    13,418.72x = 142,136,023.29
  5. Step 5: Solve for x
    x = 142,136,023.29/13,418.72
  6. Step 6: Final answer
    x = 10,592.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.