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Finding the Fourth Proportional to 13,529.06, 18,670.11 and 7,940.06

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Solution

The fourth proportional to 13,529.06, 18,670.11 and 7,940.06 is: 10,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.06 : 18,670.11 = 7,940.06 : x
  2. Step 2: Convert to fraction form
    13,529.06/18,670.11 = 7,940.06/x
  3. Step 3: Cross multiply
    13,529.06x = 18,670.11 × 7,940.06
  4. Step 4: Simplify right side
    13,529.06x = 148,241,810.51
  5. Step 5: Solve for x
    x = 148,241,810.51/13,529.06
  6. Step 6: Final answer
    x = 10,957.29

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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.