Home / 20,719.99-28,604.39-16,172.90

Finding the Fourth Proportional to 20,719.99, 28,604.39 and 16,172.90

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Solution

The fourth proportional to 20,719.99, 28,604.39 and 16,172.90 is: 22,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.99 : 28,604.39 = 16,172.90 : x
  2. Step 2: Convert to fraction form
    20,719.99/28,604.39 = 16,172.90/x
  3. Step 3: Cross multiply
    20,719.99x = 28,604.39 × 16,172.90
  4. Step 4: Simplify right side
    20,719.99x = 462,615,939.03
  5. Step 5: Solve for x
    x = 462,615,939.03/20,719.99
  6. Step 6: Final answer
    x = 22,327.03

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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.