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Finding the Fourth Proportional to 18,570.79, 25,627.47 and 10,072.75

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Solution

The fourth proportional to 18,570.79, 25,627.47 and 10,072.75 is: 13,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.79 : 25,627.47 = 10,072.75 : x
  2. Step 2: Convert to fraction form
    18,570.79/25,627.47 = 10,072.75/x
  3. Step 3: Cross multiply
    18,570.79x = 25,627.47 × 10,072.75
  4. Step 4: Simplify right side
    18,570.79x = 258,139,098.44
  5. Step 5: Solve for x
    x = 258,139,098.44/18,570.79
  6. Step 6: Final answer
    x = 13,900.28

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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.