Home / 20,913.22-31,373.73-6,877.31

Finding the Fourth Proportional to 20,913.22, 31,373.73 and 6,877.31

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Solution

The fourth proportional to 20,913.22, 31,373.73 and 6,877.31 is: 10,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.22 : 31,373.73 = 6,877.31 : x
  2. Step 2: Convert to fraction form
    20,913.22/31,373.73 = 6,877.31/x
  3. Step 3: Cross multiply
    20,913.22x = 31,373.73 × 6,877.31
  4. Step 4: Simplify right side
    20,913.22x = 215,766,710.20
  5. Step 5: Solve for x
    x = 215,766,710.20/20,913.22
  6. Step 6: Final answer
    x = 10,317.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.