Home / 13,576.72-18,735.32-7,911.76

Finding the Fourth Proportional to 13,576.72, 18,735.32 and 7,911.76

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Solution

The fourth proportional to 13,576.72, 18,735.32 and 7,911.76 is: 10,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.72 : 18,735.32 = 7,911.76 : x
  2. Step 2: Convert to fraction form
    13,576.72/18,735.32 = 7,911.76/x
  3. Step 3: Cross multiply
    13,576.72x = 18,735.32 × 7,911.76
  4. Step 4: Simplify right side
    13,576.72x = 148,229,355.36
  5. Step 5: Solve for x
    x = 148,229,355.36/13,576.72
  6. Step 6: Final answer
    x = 10,917.91

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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.