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Finding the Fourth Proportional to 13,380.01, 18,464.41 and 7,412.07

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Solution

The fourth proportional to 13,380.01, 18,464.41 and 7,412.07 is: 10,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.01 : 18,464.41 = 7,412.07 : x
  2. Step 2: Convert to fraction form
    13,380.01/18,464.41 = 7,412.07/x
  3. Step 3: Cross multiply
    13,380.01x = 18,464.41 × 7,412.07
  4. Step 4: Simplify right side
    13,380.01x = 136,859,407.11
  5. Step 5: Solve for x
    x = 136,859,407.11/13,380.01
  6. Step 6: Final answer
    x = 10,228.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.