Home / 20,144.36-30,219.62-10,278.26

Finding the Fourth Proportional to 20,144.36, 30,219.62 and 10,278.26

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Solution

The fourth proportional to 20,144.36, 30,219.62 and 10,278.26 is: 15,418.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.36 : 30,219.62 = 10,278.26 : x
  2. Step 2: Convert to fraction form
    20,144.36/30,219.62 = 10,278.26/x
  3. Step 3: Cross multiply
    20,144.36x = 30,219.62 × 10,278.26
  4. Step 4: Simplify right side
    20,144.36x = 310,605,111.46
  5. Step 5: Solve for x
    x = 310,605,111.46/20,144.36
  6. Step 6: Final answer
    x = 15,418.96

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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.