Home / 28,126-38,814.33-15,550.75

Finding the Fourth Proportional to 28,126, 38,814.33 and 15,550.75

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Solution

The fourth proportional to 28,126, 38,814.33 and 15,550.75 is: 21,460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126 : 38,814.33 = 15,550.75 : x
  2. Step 2: Convert to fraction form
    28,126/38,814.33 = 15,550.75/x
  3. Step 3: Cross multiply
    28,126x = 38,814.33 × 15,550.75
  4. Step 4: Simplify right side
    28,126x = 603,591,942.25
  5. Step 5: Solve for x
    x = 603,591,942.25/28,126
  6. Step 6: Final answer
    x = 21,460.28

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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.