Home / 13,992.05-20,988.26-4,131.47

Finding the Fourth Proportional to 13,992.05, 20,988.26 and 4,131.47

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Solution

The fourth proportional to 13,992.05, 20,988.26 and 4,131.47 is: 6,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.05 : 20,988.26 = 4,131.47 : x
  2. Step 2: Convert to fraction form
    13,992.05/20,988.26 = 4,131.47/x
  3. Step 3: Cross multiply
    13,992.05x = 20,988.26 × 4,131.47
  4. Step 4: Simplify right side
    13,992.05x = 86,712,366.54
  5. Step 5: Solve for x
    x = 86,712,366.54/13,992.05
  6. Step 6: Final answer
    x = 6,197.26

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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.