Home / 18,675.81-28,016.96-8,288.37

Finding the Fourth Proportional to 18,675.81, 28,016.96 and 8,288.37

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Solution

The fourth proportional to 18,675.81, 28,016.96 and 8,288.37 is: 12,433.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.81 : 28,016.96 = 8,288.37 : x
  2. Step 2: Convert to fraction form
    18,675.81/28,016.96 = 8,288.37/x
  3. Step 3: Cross multiply
    18,675.81x = 28,016.96 × 8,288.37
  4. Step 4: Simplify right side
    18,675.81x = 232,214,889.31
  5. Step 5: Solve for x
    x = 232,214,889.31/18,675.81
  6. Step 6: Final answer
    x = 12,433.99

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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.