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Finding the Fourth Proportional to 25,900.40, 38,850.64 and 11,099.72

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Solution

The fourth proportional to 25,900.40, 38,850.64 and 11,099.72 is: 16,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,900.40 : 38,850.64 = 11,099.72 : x
  2. Step 2: Convert to fraction form
    25,900.40/38,850.64 = 11,099.72/x
  3. Step 3: Cross multiply
    25,900.40x = 38,850.64 × 11,099.72
  4. Step 4: Simplify right side
    25,900.40x = 431,231,225.82
  5. Step 5: Solve for x
    x = 431,231,225.82/25,900.40
  6. Step 6: Final answer
    x = 16,649.60

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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.