Home / 30,621.09-42,255.99-18,704.37

Finding the Fourth Proportional to 30,621.09, 42,255.99 and 18,704.37

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Solution

The fourth proportional to 30,621.09, 42,255.99 and 18,704.37 is: 25,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.09 : 42,255.99 = 18,704.37 : x
  2. Step 2: Convert to fraction form
    30,621.09/42,255.99 = 18,704.37/x
  3. Step 3: Cross multiply
    30,621.09x = 42,255.99 × 18,704.37
  4. Step 4: Simplify right side
    30,621.09x = 790,371,671.68
  5. Step 5: Solve for x
    x = 790,371,671.68/30,621.09
  6. Step 6: Final answer
    x = 25,811.35

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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.