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Finding the Fourth Proportional to 25,436.50, 35,102.37 and 15,500.50

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Solution

The fourth proportional to 25,436.50, 35,102.37 and 15,500.50 is: 21,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,436.50 : 35,102.37 = 15,500.50 : x
  2. Step 2: Convert to fraction form
    25,436.50/35,102.37 = 15,500.50/x
  3. Step 3: Cross multiply
    25,436.50x = 35,102.37 × 15,500.50
  4. Step 4: Simplify right side
    25,436.50x = 544,104,286.19
  5. Step 5: Solve for x
    x = 544,104,286.19/25,436.50
  6. Step 6: Final answer
    x = 21,390.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.