Home / 13,080.72-18,012.06-11,830.44

Finding the Fourth Proportional to 13,080.72, 18,012.06 and 11,830.44

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Solution

The fourth proportional to 13,080.72, 18,012.06 and 11,830.44 is: 16,290.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.72 : 18,012.06 = 11,830.44 : x
  2. Step 2: Convert to fraction form
    13,080.72/18,012.06 = 11,830.44/x
  3. Step 3: Cross multiply
    13,080.72x = 18,012.06 × 11,830.44
  4. Step 4: Simplify right side
    13,080.72x = 213,090,595.11
  5. Step 5: Solve for x
    x = 213,090,595.11/13,080.72
  6. Step 6: Final answer
    x = 16,290.43

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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.