Home / 20,219.40-30,350.67-17,894.20

Finding the Fourth Proportional to 20,219.40, 30,350.67 and 17,894.20

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Solution

The fourth proportional to 20,219.40, 30,350.67 and 17,894.20 is: 26,860.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.40 : 30,350.67 = 17,894.20 : x
  2. Step 2: Convert to fraction form
    20,219.40/30,350.67 = 17,894.20/x
  3. Step 3: Cross multiply
    20,219.40x = 30,350.67 × 17,894.20
  4. Step 4: Simplify right side
    20,219.40x = 543,100,959.11
  5. Step 5: Solve for x
    x = 543,100,959.11/20,219.40
  6. Step 6: Final answer
    x = 26,860.39

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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.