Home / 28,078.66-42,081.63-11,419.34

Finding the Fourth Proportional to 28,078.66, 42,081.63 and 11,419.34

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Solution

The fourth proportional to 28,078.66, 42,081.63 and 11,419.34 is: 17,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.66 : 42,081.63 = 11,419.34 : x
  2. Step 2: Convert to fraction form
    28,078.66/42,081.63 = 11,419.34/x
  3. Step 3: Cross multiply
    28,078.66x = 42,081.63 × 11,419.34
  4. Step 4: Simplify right side
    28,078.66x = 480,544,388.12
  5. Step 5: Solve for x
    x = 480,544,388.12/28,078.66
  6. Step 6: Final answer
    x = 17,114.22

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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.