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Finding the Fourth Proportional to 25,071, 37,623.78 and 8,655

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Solution

The fourth proportional to 25,071, 37,623.78 and 8,655 is: 12,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,071 : 37,623.78 = 8,655 : x
  2. Step 2: Convert to fraction form
    25,071/37,623.78 = 8,655/x
  3. Step 3: Cross multiply
    25,071x = 37,623.78 × 8,655
  4. Step 4: Simplify right side
    25,071x = 325,633,815.90
  5. Step 5: Solve for x
    x = 325,633,815.90/25,071
  6. Step 6: Final answer
    x = 12,988.47

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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.