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Finding the Fourth Proportional to 12,247.21, 16,902.47 and 6,941.45

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Solution

The fourth proportional to 12,247.21, 16,902.47 and 6,941.45 is: 9,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.21 : 16,902.47 = 6,941.45 : x
  2. Step 2: Convert to fraction form
    12,247.21/16,902.47 = 6,941.45/x
  3. Step 3: Cross multiply
    12,247.21x = 16,902.47 × 6,941.45
  4. Step 4: Simplify right side
    12,247.21x = 117,327,615.67
  5. Step 5: Solve for x
    x = 117,327,615.67/12,247.21
  6. Step 6: Final answer
    x = 9,579.95

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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.