Home / 30,919.14-42,668.24-16,771.68

Finding the Fourth Proportional to 30,919.14, 42,668.24 and 16,771.68

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Solution

The fourth proportional to 30,919.14, 42,668.24 and 16,771.68 is: 23,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.14 : 42,668.24 = 16,771.68 : x
  2. Step 2: Convert to fraction form
    30,919.14/42,668.24 = 16,771.68/x
  3. Step 3: Cross multiply
    30,919.14x = 42,668.24 × 16,771.68
  4. Step 4: Simplify right side
    30,919.14x = 715,617,983.58
  5. Step 5: Solve for x
    x = 715,617,983.58/30,919.14
  6. Step 6: Final answer
    x = 23,144.82

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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.