Home / 18,679.04-28,015.68-8,288.96

Finding the Fourth Proportional to 18,679.04, 28,015.68 and 8,288.96

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Solution

The fourth proportional to 18,679.04, 28,015.68 and 8,288.96 is: 12,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679.04 : 28,015.68 = 8,288.96 : x
  2. Step 2: Convert to fraction form
    18,679.04/28,015.68 = 8,288.96/x
  3. Step 3: Cross multiply
    18,679.04x = 28,015.68 × 8,288.96
  4. Step 4: Simplify right side
    18,679.04x = 232,220,850.89
  5. Step 5: Solve for x
    x = 232,220,850.89/18,679.04
  6. Step 6: Final answer
    x = 12,432.16

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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.