Home / 13,728.70-18,945.59-7,441.07

Finding the Fourth Proportional to 13,728.70, 18,945.59 and 7,441.07

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Solution

The fourth proportional to 13,728.70, 18,945.59 and 7,441.07 is: 10,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.70 : 18,945.59 = 7,441.07 : x
  2. Step 2: Convert to fraction form
    13,728.70/18,945.59 = 7,441.07/x
  3. Step 3: Cross multiply
    13,728.70x = 18,945.59 × 7,441.07
  4. Step 4: Simplify right side
    13,728.70x = 140,975,424.18
  5. Step 5: Solve for x
    x = 140,975,424.18/13,728.70
  6. Step 6: Final answer
    x = 10,268.67

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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.