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Finding the Fourth Proportional to 13,767.47, 18,999.16 and 7,479.84

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Solution

The fourth proportional to 13,767.47, 18,999.16 and 7,479.84 is: 10,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.47 : 18,999.16 = 7,479.84 : x
  2. Step 2: Convert to fraction form
    13,767.47/18,999.16 = 7,479.84/x
  3. Step 3: Cross multiply
    13,767.47x = 18,999.16 × 7,479.84
  4. Step 4: Simplify right side
    13,767.47x = 142,110,729.48
  5. Step 5: Solve for x
    x = 142,110,729.48/13,767.47
  6. Step 6: Final answer
    x = 10,322.21

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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.