Home / 20,629.56-28,454.22-12,676.26

Finding the Fourth Proportional to 20,629.56, 28,454.22 and 12,676.26

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Solution

The fourth proportional to 20,629.56, 28,454.22 and 12,676.26 is: 17,484.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.56 : 28,454.22 = 12,676.26 : x
  2. Step 2: Convert to fraction form
    20,629.56/28,454.22 = 12,676.26/x
  3. Step 3: Cross multiply
    20,629.56x = 28,454.22 × 12,676.26
  4. Step 4: Simplify right side
    20,629.56x = 360,693,090.82
  5. Step 5: Solve for x
    x = 360,693,090.82/20,629.56
  6. Step 6: Final answer
    x = 17,484.28

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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.