Home / 20,704.86-28,572.48-11,273.40

Finding the Fourth Proportional to 20,704.86, 28,572.48 and 11,273.40

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Solution

The fourth proportional to 20,704.86, 28,572.48 and 11,273.40 is: 15,557.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.86 : 28,572.48 = 11,273.40 : x
  2. Step 2: Convert to fraction form
    20,704.86/28,572.48 = 11,273.40/x
  3. Step 3: Cross multiply
    20,704.86x = 28,572.48 × 11,273.40
  4. Step 4: Simplify right side
    20,704.86x = 322,108,996.03
  5. Step 5: Solve for x
    x = 322,108,996.03/20,704.86
  6. Step 6: Final answer
    x = 15,557.17

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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.