Home / 13,705.02-18,912.87-7,736.62

Finding the Fourth Proportional to 13,705.02, 18,912.87 and 7,736.62

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Solution

The fourth proportional to 13,705.02, 18,912.87 and 7,736.62 is: 10,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.02 : 18,912.87 = 7,736.62 : x
  2. Step 2: Convert to fraction form
    13,705.02/18,912.87 = 7,736.62/x
  3. Step 3: Cross multiply
    13,705.02x = 18,912.87 × 7,736.62
  4. Step 4: Simplify right side
    13,705.02x = 146,321,688.30
  5. Step 5: Solve for x
    x = 146,321,688.30/13,705.02
  6. Step 6: Final answer
    x = 10,676.50

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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.