Home / 13,409.16-20,128.44-10,653.54

Finding the Fourth Proportional to 13,409.16, 20,128.44 and 10,653.54

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Solution

The fourth proportional to 13,409.16, 20,128.44 and 10,653.54 is: 15,991.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.16 : 20,128.44 = 10,653.54 : x
  2. Step 2: Convert to fraction form
    13,409.16/20,128.44 = 10,653.54/x
  3. Step 3: Cross multiply
    13,409.16x = 20,128.44 × 10,653.54
  4. Step 4: Simplify right side
    13,409.16x = 214,439,140.68
  5. Step 5: Solve for x
    x = 214,439,140.68/13,409.16
  6. Step 6: Final answer
    x = 15,991.99

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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.