Home / 20,704.64-28,570.73-11,750.49

Finding the Fourth Proportional to 20,704.64, 28,570.73 and 11,750.49

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Solution

The fourth proportional to 20,704.64, 28,570.73 and 11,750.49 is: 16,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.64 : 28,570.73 = 11,750.49 : x
  2. Step 2: Convert to fraction form
    20,704.64/28,570.73 = 11,750.49/x
  3. Step 3: Cross multiply
    20,704.64x = 28,570.73 × 11,750.49
  4. Step 4: Simplify right side
    20,704.64x = 335,720,018.41
  5. Step 5: Solve for x
    x = 335,720,018.41/20,704.64
  6. Step 6: Final answer
    x = 16,214.73

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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.