Home / 18,116.67-27,178.20-6,429.90

Finding the Fourth Proportional to 18,116.67, 27,178.20 and 6,429.90

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Solution

The fourth proportional to 18,116.67, 27,178.20 and 6,429.90 is: 9,645.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.67 : 27,178.20 = 6,429.90 : x
  2. Step 2: Convert to fraction form
    18,116.67/27,178.20 = 6,429.90/x
  3. Step 3: Cross multiply
    18,116.67x = 27,178.20 × 6,429.90
  4. Step 4: Simplify right side
    18,116.67x = 174,753,108.18
  5. Step 5: Solve for x
    x = 174,753,108.18/18,116.67
  6. Step 6: Final answer
    x = 9,645.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.