Home / 13,489.56-20,223.78-8,558.28

Finding the Fourth Proportional to 13,489.56, 20,223.78 and 8,558.28

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Solution

The fourth proportional to 13,489.56, 20,223.78 and 8,558.28 is: 12,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.56 : 20,223.78 = 8,558.28 : x
  2. Step 2: Convert to fraction form
    13,489.56/20,223.78 = 8,558.28/x
  3. Step 3: Cross multiply
    13,489.56x = 20,223.78 × 8,558.28
  4. Step 4: Simplify right side
    13,489.56x = 173,080,771.90
  5. Step 5: Solve for x
    x = 173,080,771.90/13,489.56
  6. Step 6: Final answer
    x = 12,830.72

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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.