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Finding the Fourth Proportional to 18,683.99, 28,057.73 and 12,483.84

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Solution

The fourth proportional to 18,683.99, 28,057.73 and 12,483.84 is: 18,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.99 : 28,057.73 = 12,483.84 : x
  2. Step 2: Convert to fraction form
    18,683.99/28,057.73 = 12,483.84/x
  3. Step 3: Cross multiply
    18,683.99x = 28,057.73 × 12,483.84
  4. Step 4: Simplify right side
    18,683.99x = 350,268,149.66
  5. Step 5: Solve for x
    x = 350,268,149.66/18,683.99
  6. Step 6: Final answer
    x = 18,746.97

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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.