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Finding the Fourth Proportional to 9,903.11, 13,672.22 and 6,131.34

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Solution

The fourth proportional to 9,903.11, 13,672.22 and 6,131.34 is: 8,464.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.11 : 13,672.22 = 6,131.34 : x
  2. Step 2: Convert to fraction form
    9,903.11/13,672.22 = 6,131.34/x
  3. Step 3: Cross multiply
    9,903.11x = 13,672.22 × 6,131.34
  4. Step 4: Simplify right side
    9,903.11x = 83,828,998.72
  5. Step 5: Solve for x
    x = 83,828,998.72/9,903.11
  6. Step 6: Final answer
    x = 8,464.92

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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.