Home / 13,729.37-20,586.36-5,407.16

Finding the Fourth Proportional to 13,729.37, 20,586.36 and 5,407.16

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Solution

The fourth proportional to 13,729.37, 20,586.36 and 5,407.16 is: 8,107.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.37 : 20,586.36 = 5,407.16 : x
  2. Step 2: Convert to fraction form
    13,729.37/20,586.36 = 5,407.16/x
  3. Step 3: Cross multiply
    13,729.37x = 20,586.36 × 5,407.16
  4. Step 4: Simplify right side
    13,729.37x = 111,313,639.41
  5. Step 5: Solve for x
    x = 111,313,639.41/13,729.37
  6. Step 6: Final answer
    x = 8,107.70

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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.