Home / 20,460.96-28,256.40-19,297.44

Finding the Fourth Proportional to 20,460.96, 28,256.40 and 19,297.44

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Solution

The fourth proportional to 20,460.96, 28,256.40 and 19,297.44 is: 26,649.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.96 : 28,256.40 = 19,297.44 : x
  2. Step 2: Convert to fraction form
    20,460.96/28,256.40 = 19,297.44/x
  3. Step 3: Cross multiply
    20,460.96x = 28,256.40 × 19,297.44
  4. Step 4: Simplify right side
    20,460.96x = 545,276,183.62
  5. Step 5: Solve for x
    x = 545,276,183.62/20,460.96
  6. Step 6: Final answer
    x = 26,649.59

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Half scale
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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.