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Finding the Fourth Proportional to 13,367.16, 18,444.78 and 7,398.68

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Solution

The fourth proportional to 13,367.16, 18,444.78 and 7,398.68 is: 10,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,367.16 : 18,444.78 = 7,398.68 : x
  2. Step 2: Convert to fraction form
    13,367.16/18,444.78 = 7,398.68/x
  3. Step 3: Cross multiply
    13,367.16x = 18,444.78 × 7,398.68
  4. Step 4: Simplify right side
    13,367.16x = 136,466,932.67
  5. Step 5: Solve for x
    x = 136,466,932.67/13,367.16
  6. Step 6: Final answer
    x = 10,209.12

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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.