Home / 13,758.28-20,617.19-8,130.16

Finding the Fourth Proportional to 13,758.28, 20,617.19 and 8,130.16

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Solution

The fourth proportional to 13,758.28, 20,617.19 and 8,130.16 is: 12,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.28 : 20,617.19 = 8,130.16 : x
  2. Step 2: Convert to fraction form
    13,758.28/20,617.19 = 8,130.16/x
  3. Step 3: Cross multiply
    13,758.28x = 20,617.19 × 8,130.16
  4. Step 4: Simplify right side
    13,758.28x = 167,621,053.45
  5. Step 5: Solve for x
    x = 167,621,053.45/13,758.28
  6. Step 6: Final answer
    x = 12,183.29

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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.