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Finding the Fourth Proportional to 12,903.11, 17,804.85 and 7,236.68

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Solution

The fourth proportional to 12,903.11, 17,804.85 and 7,236.68 is: 9,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.11 : 17,804.85 = 7,236.68 : x
  2. Step 2: Convert to fraction form
    12,903.11/17,804.85 = 7,236.68/x
  3. Step 3: Cross multiply
    12,903.11x = 17,804.85 × 7,236.68
  4. Step 4: Simplify right side
    12,903.11x = 128,847,912.87
  5. Step 5: Solve for x
    x = 128,847,912.87/12,903.11
  6. Step 6: Final answer
    x = 9,985.81

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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.