Home / 30,661.26-42,311.34-18,744.54

Finding the Fourth Proportional to 30,661.26, 42,311.34 and 18,744.54

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Solution

The fourth proportional to 30,661.26, 42,311.34 and 18,744.54 is: 25,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.26 : 42,311.34 = 18,744.54 : x
  2. Step 2: Convert to fraction form
    30,661.26/42,311.34 = 18,744.54/x
  3. Step 3: Cross multiply
    30,661.26x = 42,311.34 × 18,744.54
  4. Step 4: Simplify right side
    30,661.26x = 793,106,605.08
  5. Step 5: Solve for x
    x = 793,106,605.08/30,661.26
  6. Step 6: Final answer
    x = 25,866.73

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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.