Home / 30,151.21-41,603.29-18,206.55

Finding the Fourth Proportional to 30,151.21, 41,603.29 and 18,206.55

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Solution

The fourth proportional to 30,151.21, 41,603.29 and 18,206.55 is: 25,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.21 : 41,603.29 = 18,206.55 : x
  2. Step 2: Convert to fraction form
    30,151.21/41,603.29 = 18,206.55/x
  3. Step 3: Cross multiply
    30,151.21x = 41,603.29 × 18,206.55
  4. Step 4: Simplify right side
    30,151.21x = 757,452,379.55
  5. Step 5: Solve for x
    x = 757,452,379.55/30,151.21
  6. Step 6: Final answer
    x = 25,121.79

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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.