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Finding the Fourth Proportional to 25,950.99, 38,931.36 and 8,418.54

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Solution

The fourth proportional to 25,950.99, 38,931.36 and 8,418.54 is: 12,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,950.99 : 38,931.36 = 8,418.54 : x
  2. Step 2: Convert to fraction form
    25,950.99/38,931.36 = 8,418.54/x
  3. Step 3: Cross multiply
    25,950.99x = 38,931.36 × 8,418.54
  4. Step 4: Simplify right side
    25,950.99x = 327,745,211.41
  5. Step 5: Solve for x
    x = 327,745,211.41/25,950.99
  6. Step 6: Final answer
    x = 12,629.39

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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.