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Finding the Fourth Proportional to 18,503.72, 25,535.75 and 10,120.22

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Solution

The fourth proportional to 18,503.72, 25,535.75 and 10,120.22 is: 13,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.72 : 25,535.75 = 10,120.22 : x
  2. Step 2: Convert to fraction form
    18,503.72/25,535.75 = 10,120.22/x
  3. Step 3: Cross multiply
    18,503.72x = 25,535.75 × 10,120.22
  4. Step 4: Simplify right side
    18,503.72x = 258,427,325.34
  5. Step 5: Solve for x
    x = 258,427,325.34/18,503.72
  6. Step 6: Final answer
    x = 13,966.24

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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.