Home / 30,986.01-42,760.53-16,838.91

Finding the Fourth Proportional to 30,986.01, 42,760.53 and 16,838.91

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Solution

The fourth proportional to 30,986.01, 42,760.53 and 16,838.91 is: 23,237.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.01 : 42,760.53 = 16,838.91 : x
  2. Step 2: Convert to fraction form
    30,986.01/42,760.53 = 16,838.91/x
  3. Step 3: Cross multiply
    30,986.01x = 42,760.53 × 16,838.91
  4. Step 4: Simplify right side
    30,986.01x = 720,040,716.22
  5. Step 5: Solve for x
    x = 720,040,716.22/30,986.01
  6. Step 6: Final answer
    x = 23,237.61

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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.