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Finding the Fourth Proportional to 25,287.89, 37,932.64 and 8,647.25

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Solution

The fourth proportional to 25,287.89, 37,932.64 and 8,647.25 is: 12,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,287.89 : 37,932.64 = 8,647.25 : x
  2. Step 2: Convert to fraction form
    25,287.89/37,932.64 = 8,647.25/x
  3. Step 3: Cross multiply
    25,287.89x = 37,932.64 × 8,647.25
  4. Step 4: Simplify right side
    25,287.89x = 328,013,021.24
  5. Step 5: Solve for x
    x = 328,013,021.24/25,287.89
  6. Step 6: Final answer
    x = 12,971.15

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1.5x scale

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.