Home / 13,448.13-20,164.24-5,128.72

Finding the Fourth Proportional to 13,448.13, 20,164.24 and 5,128.72

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Solution

The fourth proportional to 13,448.13, 20,164.24 and 5,128.72 is: 7,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.13 : 20,164.24 = 5,128.72 : x
  2. Step 2: Convert to fraction form
    13,448.13/20,164.24 = 5,128.72/x
  3. Step 3: Cross multiply
    13,448.13x = 20,164.24 × 5,128.72
  4. Step 4: Simplify right side
    13,448.13x = 103,416,696.97
  5. Step 5: Solve for x
    x = 103,416,696.97/13,448.13
  6. Step 6: Final answer
    x = 7,690.05

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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.