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Finding the Fourth Proportional to 16,466.40, 24,656.40 and 12,981.60

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Solution

The fourth proportional to 16,466.40, 24,656.40 and 12,981.60 is: 19,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,466.40 : 24,656.40 = 12,981.60 : x
  2. Step 2: Convert to fraction form
    16,466.40/24,656.40 = 12,981.60/x
  3. Step 3: Cross multiply
    16,466.40x = 24,656.40 × 12,981.60
  4. Step 4: Simplify right side
    16,466.40x = 320,079,522.24
  5. Step 5: Solve for x
    x = 320,079,522.24/16,466.40
  6. Step 6: Final answer
    x = 19,438.34

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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.