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Finding the Fourth Proportional to 9,360.81, 12,935.03 and 8,905.23

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Solution

The fourth proportional to 9,360.81, 12,935.03 and 8,905.23 is: 12,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.81 : 12,935.03 = 8,905.23 : x
  2. Step 2: Convert to fraction form
    9,360.81/12,935.03 = 8,905.23/x
  3. Step 3: Cross multiply
    9,360.81x = 12,935.03 × 8,905.23
  4. Step 4: Simplify right side
    9,360.81x = 115,189,372.68
  5. Step 5: Solve for x
    x = 115,189,372.68/9,360.81
  6. Step 6: Final answer
    x = 12,305.49

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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.