Home / 18,946.72-28,420.08-10,790.56

Finding the Fourth Proportional to 18,946.72, 28,420.08 and 10,790.56

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Solution

The fourth proportional to 18,946.72, 28,420.08 and 10,790.56 is: 16,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.72 : 28,420.08 = 10,790.56 : x
  2. Step 2: Convert to fraction form
    18,946.72/28,420.08 = 10,790.56/x
  3. Step 3: Cross multiply
    18,946.72x = 28,420.08 × 10,790.56
  4. Step 4: Simplify right side
    18,946.72x = 306,668,578.44
  5. Step 5: Solve for x
    x = 306,668,578.44/18,946.72
  6. Step 6: Final answer
    x = 16,185.84

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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.