Home / 20,488.56-30,687.87-16,938.33

Finding the Fourth Proportional to 20,488.56, 30,687.87 and 16,938.33

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Solution

The fourth proportional to 20,488.56, 30,687.87 and 16,938.33 is: 25,370.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.56 : 30,687.87 = 16,938.33 : x
  2. Step 2: Convert to fraction form
    20,488.56/30,687.87 = 16,938.33/x
  3. Step 3: Cross multiply
    20,488.56x = 30,687.87 × 16,938.33
  4. Step 4: Simplify right side
    20,488.56x = 519,801,269.06
  5. Step 5: Solve for x
    x = 519,801,269.06/20,488.56
  6. Step 6: Final answer
    x = 25,370.32

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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.