Home / 13,748.16-20,650.68-11,118.60

Finding the Fourth Proportional to 13,748.16, 20,650.68 and 11,118.60

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Solution

The fourth proportional to 13,748.16, 20,650.68 and 11,118.60 is: 16,700.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.16 : 20,650.68 = 11,118.60 : x
  2. Step 2: Convert to fraction form
    13,748.16/20,650.68 = 11,118.60/x
  3. Step 3: Cross multiply
    13,748.16x = 20,650.68 × 11,118.60
  4. Step 4: Simplify right side
    13,748.16x = 229,606,650.65
  5. Step 5: Solve for x
    x = 229,606,650.65/13,748.16
  6. Step 6: Final answer
    x = 16,700.90

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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.