Home / 13,944.81-20,915.37-5,178.54

Finding the Fourth Proportional to 13,944.81, 20,915.37 and 5,178.54

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Solution

The fourth proportional to 13,944.81, 20,915.37 and 5,178.54 is: 7,767.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,944.81 : 20,915.37 = 5,178.54 : x
  2. Step 2: Convert to fraction form
    13,944.81/20,915.37 = 5,178.54/x
  3. Step 3: Cross multiply
    13,944.81x = 20,915.37 × 5,178.54
  4. Step 4: Simplify right side
    13,944.81x = 108,311,080.16
  5. Step 5: Solve for x
    x = 108,311,080.16/13,944.81
  6. Step 6: Final answer
    x = 7,767.12

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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.