Home / 28,112.86-38,827.65-19,144.81

Finding the Fourth Proportional to 28,112.86, 38,827.65 and 19,144.81

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Solution

The fourth proportional to 28,112.86, 38,827.65 and 19,144.81 is: 26,441.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.86 : 38,827.65 = 19,144.81 : x
  2. Step 2: Convert to fraction form
    28,112.86/38,827.65 = 19,144.81/x
  3. Step 3: Cross multiply
    28,112.86x = 38,827.65 × 19,144.81
  4. Step 4: Simplify right side
    28,112.86x = 743,347,982.00
  5. Step 5: Solve for x
    x = 743,347,982.00/28,112.86
  6. Step 6: Final answer
    x = 26,441.56

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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.