Home / 13,214.02-18,237.20-8,179.86

Finding the Fourth Proportional to 13,214.02, 18,237.20 and 8,179.86

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Solution

The fourth proportional to 13,214.02, 18,237.20 and 8,179.86 is: 11,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.02 : 18,237.20 = 8,179.86 : x
  2. Step 2: Convert to fraction form
    13,214.02/18,237.20 = 8,179.86/x
  3. Step 3: Cross multiply
    13,214.02x = 18,237.20 × 8,179.86
  4. Step 4: Simplify right side
    13,214.02x = 149,177,742.79
  5. Step 5: Solve for x
    x = 149,177,742.79/13,214.02
  6. Step 6: Final answer
    x = 11,289.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.