Home / 13,140.73-18,134.07-7,172.35

Finding the Fourth Proportional to 13,140.73, 18,134.07 and 7,172.35

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Solution

The fourth proportional to 13,140.73, 18,134.07 and 7,172.35 is: 9,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.73 : 18,134.07 = 7,172.35 : x
  2. Step 2: Convert to fraction form
    13,140.73/18,134.07 = 7,172.35/x
  3. Step 3: Cross multiply
    13,140.73x = 18,134.07 × 7,172.35
  4. Step 4: Simplify right side
    13,140.73x = 130,063,896.96
  5. Step 5: Solve for x
    x = 130,063,896.96/13,140.73
  6. Step 6: Final answer
    x = 9,897.77

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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.