Home / 13,035.56-17,989.36-7,728.44

Finding the Fourth Proportional to 13,035.56, 17,989.36 and 7,728.44

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Solution

The fourth proportional to 13,035.56, 17,989.36 and 7,728.44 is: 10,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035.56 : 17,989.36 = 7,728.44 : x
  2. Step 2: Convert to fraction form
    13,035.56/17,989.36 = 7,728.44/x
  3. Step 3: Cross multiply
    13,035.56x = 17,989.36 × 7,728.44
  4. Step 4: Simplify right side
    13,035.56x = 139,029,580.13
  5. Step 5: Solve for x
    x = 139,029,580.13/13,035.56
  6. Step 6: Final answer
    x = 10,665.41

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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.