Home / 21,769.55-30,042.32-12,694.67

Finding the Fourth Proportional to 21,769.55, 30,042.32 and 12,694.67

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Solution

The fourth proportional to 21,769.55, 30,042.32 and 12,694.67 is: 17,518.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.55 : 30,042.32 = 12,694.67 : x
  2. Step 2: Convert to fraction form
    21,769.55/30,042.32 = 12,694.67/x
  3. Step 3: Cross multiply
    21,769.55x = 30,042.32 × 12,694.67
  4. Step 4: Simplify right side
    21,769.55x = 381,377,338.43
  5. Step 5: Solve for x
    x = 381,377,338.43/21,769.55
  6. Step 6: Final answer
    x = 17,518.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.