Home / 20,690.06-30,975.25-18,553.48

Finding the Fourth Proportional to 20,690.06, 30,975.25 and 18,553.48

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Solution

The fourth proportional to 20,690.06, 30,975.25 and 18,553.48 is: 27,776.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.06 : 30,975.25 = 18,553.48 : x
  2. Step 2: Convert to fraction form
    20,690.06/30,975.25 = 18,553.48/x
  3. Step 3: Cross multiply
    20,690.06x = 30,975.25 × 18,553.48
  4. Step 4: Simplify right side
    20,690.06x = 574,698,673.71
  5. Step 5: Solve for x
    x = 574,698,673.71/20,690.06
  6. Step 6: Final answer
    x = 27,776.56

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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.