Home / 31,661.03-43,692.95-18,230.12

Finding the Fourth Proportional to 31,661.03, 43,692.95 and 18,230.12

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Solution

The fourth proportional to 31,661.03, 43,692.95 and 18,230.12 is: 25,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,661.03 : 43,692.95 = 18,230.12 : x
  2. Step 2: Convert to fraction form
    31,661.03/43,692.95 = 18,230.12/x
  3. Step 3: Cross multiply
    31,661.03x = 43,692.95 × 18,230.12
  4. Step 4: Simplify right side
    31,661.03x = 796,527,721.65
  5. Step 5: Solve for x
    x = 796,527,721.65/31,661.03
  6. Step 6: Final answer
    x = 25,157.99

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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.