Home / 20,630.44-28,465.86-12,673.96

Finding the Fourth Proportional to 20,630.44, 28,465.86 and 12,673.96

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Solution

The fourth proportional to 20,630.44, 28,465.86 and 12,673.96 is: 17,487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.44 : 28,465.86 = 12,673.96 : x
  2. Step 2: Convert to fraction form
    20,630.44/28,465.86 = 12,673.96/x
  3. Step 3: Cross multiply
    20,630.44x = 28,465.86 × 12,673.96
  4. Step 4: Simplify right side
    20,630.44x = 360,775,171.01
  5. Step 5: Solve for x
    x = 360,775,171.01/20,630.44
  6. Step 6: Final answer
    x = 17,487.52

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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.