Home / 13,958.21-19,261.81-7,989.73

Finding the Fourth Proportional to 13,958.21, 19,261.81 and 7,989.73

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Solution

The fourth proportional to 13,958.21, 19,261.81 and 7,989.73 is: 11,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.21 : 19,261.81 = 7,989.73 : x
  2. Step 2: Convert to fraction form
    13,958.21/19,261.81 = 7,989.73/x
  3. Step 3: Cross multiply
    13,958.21x = 19,261.81 × 7,989.73
  4. Step 4: Simplify right side
    13,958.21x = 153,896,661.21
  5. Step 5: Solve for x
    x = 153,896,661.21/13,958.21
  6. Step 6: Final answer
    x = 11,025.53

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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.