Home / 30,995.56-42,786.98-20,937.64

Finding the Fourth Proportional to 30,995.56, 42,786.98 and 20,937.64

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Solution

The fourth proportional to 30,995.56, 42,786.98 and 20,937.64 is: 28,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,995.56 : 42,786.98 = 20,937.64 : x
  2. Step 2: Convert to fraction form
    30,995.56/42,786.98 = 20,937.64/x
  3. Step 3: Cross multiply
    30,995.56x = 42,786.98 × 20,937.64
  4. Step 4: Simplify right side
    30,995.56x = 895,858,383.93
  5. Step 5: Solve for x
    x = 895,858,383.93/30,995.56
  6. Step 6: Final answer
    x = 28,902.80

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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.