Home / 18,271.25-27,403.79-6,433.80

Finding the Fourth Proportional to 18,271.25, 27,403.79 and 6,433.80

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Solution

The fourth proportional to 18,271.25, 27,403.79 and 6,433.80 is: 9,649.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.25 : 27,403.79 = 6,433.80 : x
  2. Step 2: Convert to fraction form
    18,271.25/27,403.79 = 6,433.80/x
  3. Step 3: Cross multiply
    18,271.25x = 27,403.79 × 6,433.80
  4. Step 4: Simplify right side
    18,271.25x = 176,310,654.67
  5. Step 5: Solve for x
    x = 176,310,654.67/18,271.25
  6. Step 6: Final answer
    x = 9,649.62

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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.