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Finding the Fourth Proportional to 18,433, 25,428.78 and 12,466.76

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Solution

The fourth proportional to 18,433, 25,428.78 and 12,466.76 is: 17,198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,433 : 25,428.78 = 12,466.76 : x
  2. Step 2: Convert to fraction form
    18,433/25,428.78 = 12,466.76/x
  3. Step 3: Cross multiply
    18,433x = 25,428.78 × 12,466.76
  4. Step 4: Simplify right side
    18,433x = 317,014,497.35
  5. Step 5: Solve for x
    x = 317,014,497.35/18,433
  6. Step 6: Final answer
    x = 17,198.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.