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Finding the Fourth Proportional to 13,484.84, 18,608.45 and 7,517.07

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Solution

The fourth proportional to 13,484.84, 18,608.45 and 7,517.07 is: 10,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.84 : 18,608.45 = 7,517.07 : x
  2. Step 2: Convert to fraction form
    13,484.84/18,608.45 = 7,517.07/x
  3. Step 3: Cross multiply
    13,484.84x = 18,608.45 × 7,517.07
  4. Step 4: Simplify right side
    13,484.84x = 139,880,983.66
  5. Step 5: Solve for x
    x = 139,880,983.66/13,484.84
  6. Step 6: Final answer
    x = 10,373.21

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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.