Home / 28,047.32-42,078.96-11,419.29

Finding the Fourth Proportional to 28,047.32, 42,078.96 and 11,419.29

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Solution

The fourth proportional to 28,047.32, 42,078.96 and 11,419.29 is: 17,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.32 : 42,078.96 = 11,419.29 : x
  2. Step 2: Convert to fraction form
    28,047.32/42,078.96 = 11,419.29/x
  3. Step 3: Cross multiply
    28,047.32x = 42,078.96 × 11,419.29
  4. Step 4: Simplify right side
    28,047.32x = 480,511,847.14
  5. Step 5: Solve for x
    x = 480,511,847.14/28,047.32
  6. Step 6: Final answer
    x = 17,132.18

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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.