Home / 20,915.61-31,373.42-5,333.24

Finding the Fourth Proportional to 20,915.61, 31,373.42 and 5,333.24

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Solution

The fourth proportional to 20,915.61, 31,373.42 and 5,333.24 is: 7,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.61 : 31,373.42 = 5,333.24 : x
  2. Step 2: Convert to fraction form
    20,915.61/31,373.42 = 5,333.24/x
  3. Step 3: Cross multiply
    20,915.61x = 31,373.42 × 5,333.24
  4. Step 4: Simplify right side
    20,915.61x = 167,321,794.95
  5. Step 5: Solve for x
    x = 167,321,794.95/20,915.61
  6. Step 6: Final answer
    x = 7,999.85

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