Home / 20,881.40-31,323.30-6,092.60

Finding the Fourth Proportional to 20,881.40, 31,323.30 and 6,092.60

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Solution

The fourth proportional to 20,881.40, 31,323.30 and 6,092.60 is: 9,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.40 : 31,323.30 = 6,092.60 : x
  2. Step 2: Convert to fraction form
    20,881.40/31,323.30 = 6,092.60/x
  3. Step 3: Cross multiply
    20,881.40x = 31,323.30 × 6,092.60
  4. Step 4: Simplify right side
    20,881.40x = 190,840,337.58
  5. Step 5: Solve for x
    x = 190,840,337.58/20,881.40
  6. Step 6: Final answer
    x = 9,139.25

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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.