Home / 13,099.45-19,638.15-5,313.73

Finding the Fourth Proportional to 13,099.45, 19,638.15 and 5,313.73

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Solution

The fourth proportional to 13,099.45, 19,638.15 and 5,313.73 is: 7,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.45 : 19,638.15 = 5,313.73 : x
  2. Step 2: Convert to fraction form
    13,099.45/19,638.15 = 5,313.73/x
  3. Step 3: Cross multiply
    13,099.45x = 19,638.15 × 5,313.73
  4. Step 4: Simplify right side
    13,099.45x = 104,351,826.80
  5. Step 5: Solve for x
    x = 104,351,826.80/13,099.45
  6. Step 6: Final answer
    x = 7,966.12

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1.5x scale

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.