Home / 28,629.03-39,466.26-20,105.40

Finding the Fourth Proportional to 28,629.03, 39,466.26 and 20,105.40

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Solution

The fourth proportional to 28,629.03, 39,466.26 and 20,105.40 is: 27,716.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.03 : 39,466.26 = 20,105.40 : x
  2. Step 2: Convert to fraction form
    28,629.03/39,466.26 = 20,105.40/x
  3. Step 3: Cross multiply
    28,629.03x = 39,466.26 × 20,105.40
  4. Step 4: Simplify right side
    28,629.03x = 793,484,943.80
  5. Step 5: Solve for x
    x = 793,484,943.80/28,629.03
  6. Step 6: Final answer
    x = 27,716.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.