Home / 13,477.73-20,220.23-7,638.44

Finding the Fourth Proportional to 13,477.73, 20,220.23 and 7,638.44

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Solution

The fourth proportional to 13,477.73, 20,220.23 and 7,638.44 is: 11,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.73 : 20,220.23 = 7,638.44 : x
  2. Step 2: Convert to fraction form
    13,477.73/20,220.23 = 7,638.44/x
  3. Step 3: Cross multiply
    13,477.73x = 20,220.23 × 7,638.44
  4. Step 4: Simplify right side
    13,477.73x = 154,451,013.64
  5. Step 5: Solve for x
    x = 154,451,013.64/13,477.73
  6. Step 6: Final answer
    x = 11,459.72

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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.