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Finding the Fourth Proportional to 13,098.84, 18,076.79 and 7,130.89

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Solution

The fourth proportional to 13,098.84, 18,076.79 and 7,130.89 is: 9,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.84 : 18,076.79 = 7,130.89 : x
  2. Step 2: Convert to fraction form
    13,098.84/18,076.79 = 7,130.89/x
  3. Step 3: Cross multiply
    13,098.84x = 18,076.79 × 7,130.89
  4. Step 4: Simplify right side
    13,098.84x = 128,903,601.04
  5. Step 5: Solve for x
    x = 128,903,601.04/13,098.84
  6. Step 6: Final answer
    x = 9,840.84

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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.