Home / 30,898.27-42,616.97-20,284.03

Finding the Fourth Proportional to 30,898.27, 42,616.97 and 20,284.03

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Solution

The fourth proportional to 30,898.27, 42,616.97 and 20,284.03 is: 27,977.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.27 : 42,616.97 = 20,284.03 : x
  2. Step 2: Convert to fraction form
    30,898.27/42,616.97 = 20,284.03/x
  3. Step 3: Cross multiply
    30,898.27x = 42,616.97 × 20,284.03
  4. Step 4: Simplify right side
    30,898.27x = 864,443,796.57
  5. Step 5: Solve for x
    x = 864,443,796.57/30,898.27
  6. Step 6: Final answer
    x = 27,977.09

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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.