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Finding the Fourth Proportional to 9,112.81, 13,669.21 and 7,035.85

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Solution

The fourth proportional to 9,112.81, 13,669.21 and 7,035.85 is: 10,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.81 : 13,669.21 = 7,035.85 : x
  2. Step 2: Convert to fraction form
    9,112.81/13,669.21 = 7,035.85/x
  3. Step 3: Cross multiply
    9,112.81x = 13,669.21 × 7,035.85
  4. Step 4: Simplify right side
    9,112.81x = 96,174,407.65
  5. Step 5: Solve for x
    x = 96,174,407.65/9,112.81
  6. Step 6: Final answer
    x = 10,553.77

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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.