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Finding the Fourth Proportional to 9,361.80, 14,028.30 and 8,123.40

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Solution

The fourth proportional to 9,361.80, 14,028.30 and 8,123.40 is: 12,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.80 : 14,028.30 = 8,123.40 : x
  2. Step 2: Convert to fraction form
    9,361.80/14,028.30 = 8,123.40/x
  3. Step 3: Cross multiply
    9,361.80x = 14,028.30 × 8,123.40
  4. Step 4: Simplify right side
    9,361.80x = 113,957,492.22
  5. Step 5: Solve for x
    x = 113,957,492.22/9,361.80
  6. Step 6: Final answer
    x = 12,172.60

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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.