Home / 13,401.88-18,491.40-8,558.62

Finding the Fourth Proportional to 13,401.88, 18,491.40 and 8,558.62

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Solution

The fourth proportional to 13,401.88, 18,491.40 and 8,558.62 is: 11,808.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.88 : 18,491.40 = 8,558.62 : x
  2. Step 2: Convert to fraction form
    13,401.88/18,491.40 = 8,558.62/x
  3. Step 3: Cross multiply
    13,401.88x = 18,491.40 × 8,558.62
  4. Step 4: Simplify right side
    13,401.88x = 158,260,865.87
  5. Step 5: Solve for x
    x = 158,260,865.87/13,401.88
  6. Step 6: Final answer
    x = 11,808.86

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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.