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Finding the Fourth Proportional to 25,172, 37,762.32 and 7,643.60

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Solution

The fourth proportional to 25,172, 37,762.32 and 7,643.60 is: 11,466.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,172 : 37,762.32 = 7,643.60 : x
  2. Step 2: Convert to fraction form
    25,172/37,762.32 = 7,643.60/x
  3. Step 3: Cross multiply
    25,172x = 37,762.32 × 7,643.60
  4. Step 4: Simplify right side
    25,172x = 288,640,069.15
  5. Step 5: Solve for x
    x = 288,640,069.15/25,172
  6. Step 6: Final answer
    x = 11,466.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.