Home / 13,505.81-20,258.71-3,645.09

Finding the Fourth Proportional to 13,505.81, 20,258.71 and 3,645.09

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Solution

The fourth proportional to 13,505.81, 20,258.71 and 3,645.09 is: 5,467.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.81 : 20,258.71 = 3,645.09 : x
  2. Step 2: Convert to fraction form
    13,505.81/20,258.71 = 3,645.09/x
  3. Step 3: Cross multiply
    13,505.81x = 20,258.71 × 3,645.09
  4. Step 4: Simplify right side
    13,505.81x = 73,844,821.23
  5. Step 5: Solve for x
    x = 73,844,821.23/13,505.81
  6. Step 6: Final answer
    x = 5,467.63

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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.