Home / 18,847.90-28,228.53-10,930.81

Finding the Fourth Proportional to 18,847.90, 28,228.53 and 10,930.81

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Solution

The fourth proportional to 18,847.90, 28,228.53 and 10,930.81 is: 16,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.90 : 28,228.53 = 10,930.81 : x
  2. Step 2: Convert to fraction form
    18,847.90/28,228.53 = 10,930.81/x
  3. Step 3: Cross multiply
    18,847.90x = 28,228.53 × 10,930.81
  4. Step 4: Simplify right side
    18,847.90x = 308,560,698.01
  5. Step 5: Solve for x
    x = 308,560,698.01/18,847.90
  6. Step 6: Final answer
    x = 16,371.09

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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.