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Finding the Fourth Proportional to 13,357.28, 18,433.16 and 7,389.14

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Solution

The fourth proportional to 13,357.28, 18,433.16 and 7,389.14 is: 10,197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.28 : 18,433.16 = 7,389.14 : x
  2. Step 2: Convert to fraction form
    13,357.28/18,433.16 = 7,389.14/x
  3. Step 3: Cross multiply
    13,357.28x = 18,433.16 × 7,389.14
  4. Step 4: Simplify right side
    13,357.28x = 136,205,199.88
  5. Step 5: Solve for x
    x = 136,205,199.88/13,357.28
  6. Step 6: Final answer
    x = 10,197.08

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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.