Home / 20,666.29-30,794.21-19,662.16

Finding the Fourth Proportional to 20,666.29, 30,794.21 and 19,662.16

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Solution

The fourth proportional to 20,666.29, 30,794.21 and 19,662.16 is: 29,297.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.29 : 30,794.21 = 19,662.16 : x
  2. Step 2: Convert to fraction form
    20,666.29/30,794.21 = 19,662.16/x
  3. Step 3: Cross multiply
    20,666.29x = 30,794.21 × 19,662.16
  4. Step 4: Simplify right side
    20,666.29x = 605,480,684.09
  5. Step 5: Solve for x
    x = 605,480,684.09/20,666.29
  6. Step 6: Final answer
    x = 29,297.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.