Home / 20,948.55-31,422.83-6,157.47

Finding the Fourth Proportional to 20,948.55, 31,422.83 and 6,157.47

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Solution

The fourth proportional to 20,948.55, 31,422.83 and 6,157.47 is: 9,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.55 : 31,422.83 = 6,157.47 : x
  2. Step 2: Convert to fraction form
    20,948.55/31,422.83 = 6,157.47/x
  3. Step 3: Cross multiply
    20,948.55x = 31,422.83 × 6,157.47
  4. Step 4: Simplify right side
    20,948.55x = 193,485,133.04
  5. Step 5: Solve for x
    x = 193,485,133.04/20,948.55
  6. Step 6: Final answer
    x = 9,236.21

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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.