Home / 20,154.12-30,078.77-19,629.24

Finding the Fourth Proportional to 20,154.12, 30,078.77 and 19,629.24

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Solution

The fourth proportional to 20,154.12, 30,078.77 and 19,629.24 is: 29,295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.12 : 30,078.77 = 19,629.24 : x
  2. Step 2: Convert to fraction form
    20,154.12/30,078.77 = 19,629.24/x
  3. Step 3: Cross multiply
    20,154.12x = 30,078.77 × 19,629.24
  4. Step 4: Simplify right side
    20,154.12x = 590,423,239.50
  5. Step 5: Solve for x
    x = 590,423,239.50/20,154.12
  6. Step 6: Final answer
    x = 29,295.42

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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.