Home / 18,811.85-25,961.51-10,428.35

Finding the Fourth Proportional to 18,811.85, 25,961.51 and 10,428.35

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Solution

The fourth proportional to 18,811.85, 25,961.51 and 10,428.35 is: 14,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.85 : 25,961.51 = 10,428.35 : x
  2. Step 2: Convert to fraction form
    18,811.85/25,961.51 = 10,428.35/x
  3. Step 3: Cross multiply
    18,811.85x = 25,961.51 × 10,428.35
  4. Step 4: Simplify right side
    18,811.85x = 270,735,609.07
  5. Step 5: Solve for x
    x = 270,735,609.07/18,811.85
  6. Step 6: Final answer
    x = 14,391.76

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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.