Home / 13,510.12-20,268.24-5,190.40

Finding the Fourth Proportional to 13,510.12, 20,268.24 and 5,190.40

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Solution

The fourth proportional to 13,510.12, 20,268.24 and 5,190.40 is: 7,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.12 : 20,268.24 = 5,190.40 : x
  2. Step 2: Convert to fraction form
    13,510.12/20,268.24 = 5,190.40/x
  3. Step 3: Cross multiply
    13,510.12x = 20,268.24 × 5,190.40
  4. Step 4: Simplify right side
    13,510.12x = 105,200,272.90
  5. Step 5: Solve for x
    x = 105,200,272.90/13,510.12
  6. Step 6: Final answer
    x = 7,786.78

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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.