Home / 20,219.91-30,351.42-17,894.70

Finding the Fourth Proportional to 20,219.91, 30,351.42 and 17,894.70

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Solution

The fourth proportional to 20,219.91, 30,351.42 and 17,894.70 is: 26,861.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.91 : 30,351.42 = 17,894.70 : x
  2. Step 2: Convert to fraction form
    20,219.91/30,351.42 = 17,894.70/x
  3. Step 3: Cross multiply
    20,219.91x = 30,351.42 × 17,894.70
  4. Step 4: Simplify right side
    20,219.91x = 543,129,555.47
  5. Step 5: Solve for x
    x = 543,129,555.47/20,219.91
  6. Step 6: Final answer
    x = 26,861.13

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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.