Home / 20,984.67-28,951.53-11,908.96

Finding the Fourth Proportional to 20,984.67, 28,951.53 and 11,908.96

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Solution

The fourth proportional to 20,984.67, 28,951.53 and 11,908.96 is: 16,430.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.67 : 28,951.53 = 11,908.96 : x
  2. Step 2: Convert to fraction form
    20,984.67/28,951.53 = 11,908.96/x
  3. Step 3: Cross multiply
    20,984.67x = 28,951.53 × 11,908.96
  4. Step 4: Simplify right side
    20,984.67x = 344,782,612.71
  5. Step 5: Solve for x
    x = 344,782,612.71/20,984.67
  6. Step 6: Final answer
    x = 16,430.21

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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.