Home / 30,965.10-42,732.33-16,817.88

Finding the Fourth Proportional to 30,965.10, 42,732.33 and 16,817.88

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Solution

The fourth proportional to 30,965.10, 42,732.33 and 16,817.88 is: 23,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.10 : 42,732.33 = 16,817.88 : x
  2. Step 2: Convert to fraction form
    30,965.10/42,732.33 = 16,817.88/x
  3. Step 3: Cross multiply
    30,965.10x = 42,732.33 × 16,817.88
  4. Step 4: Simplify right side
    30,965.10x = 718,667,198.06
  5. Step 5: Solve for x
    x = 718,667,198.06/30,965.10
  6. Step 6: Final answer
    x = 23,208.94

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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.