Home / 13,266.40-19,942.80-12,229.60

Finding the Fourth Proportional to 13,266.40, 19,942.80 and 12,229.60

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Solution

The fourth proportional to 13,266.40, 19,942.80 and 12,229.60 is: 18,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.40 : 19,942.80 = 12,229.60 : x
  2. Step 2: Convert to fraction form
    13,266.40/19,942.80 = 12,229.60/x
  3. Step 3: Cross multiply
    13,266.40x = 19,942.80 × 12,229.60
  4. Step 4: Simplify right side
    13,266.40x = 243,892,466.88
  5. Step 5: Solve for x
    x = 243,892,466.88/13,266.40
  6. Step 6: Final answer
    x = 18,384.22

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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.