Home / 20,676.81-28,533.48-12,064.64

Finding the Fourth Proportional to 20,676.81, 28,533.48 and 12,064.64

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Solution

The fourth proportional to 20,676.81, 28,533.48 and 12,064.64 is: 16,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.81 : 28,533.48 = 12,064.64 : x
  2. Step 2: Convert to fraction form
    20,676.81/28,533.48 = 12,064.64/x
  3. Step 3: Cross multiply
    20,676.81x = 28,533.48 × 12,064.64
  4. Step 4: Simplify right side
    20,676.81x = 344,246,164.15
  5. Step 5: Solve for x
    x = 344,246,164.15/20,676.81
  6. Step 6: Final answer
    x = 16,648.90

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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.