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Finding the Fourth Proportional to 25,328.82, 37,982.28 and 8,690.46

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Solution

The fourth proportional to 25,328.82, 37,982.28 and 8,690.46 is: 13,031.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,328.82 : 37,982.28 = 8,690.46 : x
  2. Step 2: Convert to fraction form
    25,328.82/37,982.28 = 8,690.46/x
  3. Step 3: Cross multiply
    25,328.82x = 37,982.28 × 8,690.46
  4. Step 4: Simplify right side
    25,328.82x = 330,083,485.05
  5. Step 5: Solve for x
    x = 330,083,485.05/25,328.82
  6. Step 6: Final answer
    x = 13,031.93

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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.