Home / 30,868.21-46,270.53-12,140.65

Finding the Fourth Proportional to 30,868.21, 46,270.53 and 12,140.65

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Solution

The fourth proportional to 30,868.21, 46,270.53 and 12,140.65 is: 18,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.21 : 46,270.53 = 12,140.65 : x
  2. Step 2: Convert to fraction form
    30,868.21/46,270.53 = 12,140.65/x
  3. Step 3: Cross multiply
    30,868.21x = 46,270.53 × 12,140.65
  4. Step 4: Simplify right side
    30,868.21x = 561,754,310.04
  5. Step 5: Solve for x
    x = 561,754,310.04/30,868.21
  6. Step 6: Final answer
    x = 18,198.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.