Home / 12,790.84-17,616.06-11,021.80

Finding the Fourth Proportional to 12,790.84, 17,616.06 and 11,021.80

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Solution

The fourth proportional to 12,790.84, 17,616.06 and 11,021.80 is: 15,179.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.84 : 17,616.06 = 11,021.80 : x
  2. Step 2: Convert to fraction form
    12,790.84/17,616.06 = 11,021.80/x
  3. Step 3: Cross multiply
    12,790.84x = 17,616.06 × 11,021.80
  4. Step 4: Simplify right side
    12,790.84x = 194,160,690.11
  5. Step 5: Solve for x
    x = 194,160,690.11/12,790.84
  6. Step 6: Final answer
    x = 15,179.67

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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.