Home / 28,621.80-39,499.11-16,683.21

Finding the Fourth Proportional to 28,621.80, 39,499.11 and 16,683.21

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Solution

The fourth proportional to 28,621.80, 39,499.11 and 16,683.21 is: 23,023.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.80 : 39,499.11 = 16,683.21 : x
  2. Step 2: Convert to fraction form
    28,621.80/39,499.11 = 16,683.21/x
  3. Step 3: Cross multiply
    28,621.80x = 39,499.11 × 16,683.21
  4. Step 4: Simplify right side
    28,621.80x = 658,971,946.94
  5. Step 5: Solve for x
    x = 658,971,946.94/28,621.80
  6. Step 6: Final answer
    x = 23,023.43

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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.