Home / 30,890.82-42,629.28-16,743.90

Finding the Fourth Proportional to 30,890.82, 42,629.28 and 16,743.90

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Solution

The fourth proportional to 30,890.82, 42,629.28 and 16,743.90 is: 23,106.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.82 : 42,629.28 = 16,743.90 : x
  2. Step 2: Convert to fraction form
    30,890.82/42,629.28 = 16,743.90/x
  3. Step 3: Cross multiply
    30,890.82x = 42,629.28 × 16,743.90
  4. Step 4: Simplify right side
    30,890.82x = 713,780,401.39
  5. Step 5: Solve for x
    x = 713,780,401.39/30,890.82
  6. Step 6: Final answer
    x = 23,106.55

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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.