Home / 18,117.67-27,179.70-6,430.90

Finding the Fourth Proportional to 18,117.67, 27,179.70 and 6,430.90

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Solution

The fourth proportional to 18,117.67, 27,179.70 and 6,430.90 is: 9,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.67 : 27,179.70 = 6,430.90 : x
  2. Step 2: Convert to fraction form
    18,117.67/27,179.70 = 6,430.90/x
  3. Step 3: Cross multiply
    18,117.67x = 27,179.70 × 6,430.90
  4. Step 4: Simplify right side
    18,117.67x = 174,789,932.73
  5. Step 5: Solve for x
    x = 174,789,932.73/18,117.67
  6. Step 6: Final answer
    x = 9,647.48

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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.