Home / 13,488.35-18,621.90-11,992.12

Finding the Fourth Proportional to 13,488.35, 18,621.90 and 11,992.12

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Solution

The fourth proportional to 13,488.35, 18,621.90 and 11,992.12 is: 16,556.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.35 : 18,621.90 = 11,992.12 : x
  2. Step 2: Convert to fraction form
    13,488.35/18,621.90 = 11,992.12/x
  3. Step 3: Cross multiply
    13,488.35x = 18,621.90 × 11,992.12
  4. Step 4: Simplify right side
    13,488.35x = 223,316,059.43
  5. Step 5: Solve for x
    x = 223,316,059.43/13,488.35
  6. Step 6: Final answer
    x = 16,556.22

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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.