Home / 30,739.08-42,418.79-17,126.80

Finding the Fourth Proportional to 30,739.08, 42,418.79 and 17,126.80

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Solution

The fourth proportional to 30,739.08, 42,418.79 and 17,126.80 is: 23,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,739.08 : 42,418.79 = 17,126.80 : x
  2. Step 2: Convert to fraction form
    30,739.08/42,418.79 = 17,126.80/x
  3. Step 3: Cross multiply
    30,739.08x = 42,418.79 × 17,126.80
  4. Step 4: Simplify right side
    30,739.08x = 726,498,132.57
  5. Step 5: Solve for x
    x = 726,498,132.57/30,739.08
  6. Step 6: Final answer
    x = 23,634.35

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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.