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Finding the Fourth Proportional to 25,325.09, 37,978.30 and 8,680.66

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Solution

The fourth proportional to 25,325.09, 37,978.30 and 8,680.66 is: 13,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,325.09 : 37,978.30 = 8,680.66 : x
  2. Step 2: Convert to fraction form
    25,325.09/37,978.30 = 8,680.66/x
  3. Step 3: Cross multiply
    25,325.09x = 37,978.30 × 8,680.66
  4. Step 4: Simplify right side
    25,325.09x = 329,676,709.68
  5. Step 5: Solve for x
    x = 329,676,709.68/25,325.09
  6. Step 6: Final answer
    x = 13,017.79

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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.