Home / 28,120.96-42,181.44-11,488.84

Finding the Fourth Proportional to 28,120.96, 42,181.44 and 11,488.84

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Solution

The fourth proportional to 28,120.96, 42,181.44 and 11,488.84 is: 17,233.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.96 : 42,181.44 = 11,488.84 : x
  2. Step 2: Convert to fraction form
    28,120.96/42,181.44 = 11,488.84/x
  3. Step 3: Cross multiply
    28,120.96x = 42,181.44 × 11,488.84
  4. Step 4: Simplify right side
    28,120.96x = 484,615,815.13
  5. Step 5: Solve for x
    x = 484,615,815.13/28,120.96
  6. Step 6: Final answer
    x = 17,233.26

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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.