Home / 18,983.85-28,468.76-11,089.05

Finding the Fourth Proportional to 18,983.85, 28,468.76 and 11,089.05

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Solution

The fourth proportional to 18,983.85, 28,468.76 and 11,089.05 is: 16,629.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.85 : 28,468.76 = 11,089.05 : x
  2. Step 2: Convert to fraction form
    18,983.85/28,468.76 = 11,089.05/x
  3. Step 3: Cross multiply
    18,983.85x = 28,468.76 × 11,089.05
  4. Step 4: Simplify right side
    18,983.85x = 315,691,447.63
  5. Step 5: Solve for x
    x = 315,691,447.63/18,983.85
  6. Step 6: Final answer
    x = 16,629.47

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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.