Home / 20,719.36-28,609.59-16,891.62

Finding the Fourth Proportional to 20,719.36, 28,609.59 and 16,891.62

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Solution

The fourth proportional to 20,719.36, 28,609.59 and 16,891.62 is: 23,324.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.36 : 28,609.59 = 16,891.62 : x
  2. Step 2: Convert to fraction form
    20,719.36/28,609.59 = 16,891.62/x
  3. Step 3: Cross multiply
    20,719.36x = 28,609.59 × 16,891.62
  4. Step 4: Simplify right side
    20,719.36x = 483,262,322.64
  5. Step 5: Solve for x
    x = 483,262,322.64/20,719.36
  6. Step 6: Final answer
    x = 23,324.19

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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.