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Finding the Fourth Proportional to 18,466.74, 25,471.17 and 12,495.78

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Solution

The fourth proportional to 18,466.74, 25,471.17 and 12,495.78 is: 17,235.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,466.74 : 25,471.17 = 12,495.78 : x
  2. Step 2: Convert to fraction form
    18,466.74/25,471.17 = 12,495.78/x
  3. Step 3: Cross multiply
    18,466.74x = 25,471.17 × 12,495.78
  4. Step 4: Simplify right side
    18,466.74x = 318,282,136.66
  5. Step 5: Solve for x
    x = 318,282,136.66/18,466.74
  6. Step 6: Final answer
    x = 17,235.43

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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.