Home / 13,555.22-18,707.83-8,250.80

Finding the Fourth Proportional to 13,555.22, 18,707.83 and 8,250.80

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Solution

The fourth proportional to 13,555.22, 18,707.83 and 8,250.80 is: 11,387.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.22 : 18,707.83 = 8,250.80 : x
  2. Step 2: Convert to fraction form
    13,555.22/18,707.83 = 8,250.80/x
  3. Step 3: Cross multiply
    13,555.22x = 18,707.83 × 8,250.80
  4. Step 4: Simplify right side
    13,555.22x = 154,354,449.60
  5. Step 5: Solve for x
    x = 154,354,449.60/13,555.22
  6. Step 6: Final answer
    x = 11,387.09

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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.