Home / 12,288.96-18,435.27-4,390.86

Finding the Fourth Proportional to 12,288.96, 18,435.27 and 4,390.86

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Solution

The fourth proportional to 12,288.96, 18,435.27 and 4,390.86 is: 6,586.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.96 : 18,435.27 = 4,390.86 : x
  2. Step 2: Convert to fraction form
    12,288.96/18,435.27 = 4,390.86/x
  3. Step 3: Cross multiply
    12,288.96x = 18,435.27 × 4,390.86
  4. Step 4: Simplify right side
    12,288.96x = 80,946,689.63
  5. Step 5: Solve for x
    x = 80,946,689.63/12,288.96
  6. Step 6: Final answer
    x = 6,586.94

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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.