Home / 13,285.82-18,334.96-7,620.48

Finding the Fourth Proportional to 13,285.82, 18,334.96 and 7,620.48

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Solution

The fourth proportional to 13,285.82, 18,334.96 and 7,620.48 is: 10,516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.82 : 18,334.96 = 7,620.48 : x
  2. Step 2: Convert to fraction form
    13,285.82/18,334.96 = 7,620.48/x
  3. Step 3: Cross multiply
    13,285.82x = 18,334.96 × 7,620.48
  4. Step 4: Simplify right side
    13,285.82x = 139,721,176.93
  5. Step 5: Solve for x
    x = 139,721,176.93/13,285.82
  6. Step 6: Final answer
    x = 10,516.56

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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.