Home / 30,990.69-42,765.35-16,843.41

Finding the Fourth Proportional to 30,990.69, 42,765.35 and 16,843.41

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Solution

The fourth proportional to 30,990.69, 42,765.35 and 16,843.41 is: 23,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.69 : 42,765.35 = 16,843.41 : x
  2. Step 2: Convert to fraction form
    30,990.69/42,765.35 = 16,843.41/x
  3. Step 3: Cross multiply
    30,990.69x = 42,765.35 × 16,843.41
  4. Step 4: Simplify right side
    30,990.69x = 720,314,239.63
  5. Step 5: Solve for x
    x = 720,314,239.63/30,990.69
  6. Step 6: Final answer
    x = 23,242.92

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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.