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Finding the Fourth Proportional to 25,321.95, 34,945.16 and 15,895.71

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Solution

The fourth proportional to 25,321.95, 34,945.16 and 15,895.71 is: 21,936.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.95 : 34,945.16 = 15,895.71 : x
  2. Step 2: Convert to fraction form
    25,321.95/34,945.16 = 15,895.71/x
  3. Step 3: Cross multiply
    25,321.95x = 34,945.16 × 15,895.71
  4. Step 4: Simplify right side
    25,321.95x = 555,478,049.79
  5. Step 5: Solve for x
    x = 555,478,049.79/25,321.95
  6. Step 6: Final answer
    x = 21,936.62

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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.