Home / 20,443.80-28,228.32-16,483.80

Finding the Fourth Proportional to 20,443.80, 28,228.32 and 16,483.80

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Solution

The fourth proportional to 20,443.80, 28,228.32 and 16,483.80 is: 22,760.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.80 : 28,228.32 = 16,483.80 : x
  2. Step 2: Convert to fraction form
    20,443.80/28,228.32 = 16,483.80/x
  3. Step 3: Cross multiply
    20,443.80x = 28,228.32 × 16,483.80
  4. Step 4: Simplify right side
    20,443.80x = 465,309,981.22
  5. Step 5: Solve for x
    x = 465,309,981.22/20,443.80
  6. Step 6: Final answer
    x = 22,760.44

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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.