Home / 20,851.02-31,280.00-6,806.97

Finding the Fourth Proportional to 20,851.02, 31,280.00 and 6,806.97

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Solution

The fourth proportional to 20,851.02, 31,280.00 and 6,806.97 is: 10,211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.02 : 31,280.00 = 6,806.97 : x
  2. Step 2: Convert to fraction form
    20,851.02/31,280.00 = 6,806.97/x
  3. Step 3: Cross multiply
    20,851.02x = 31,280.00 × 6,806.97
  4. Step 4: Simplify right side
    20,851.02x = 212,921,987.57
  5. Step 5: Solve for x
    x = 212,921,987.57/20,851.02
  6. Step 6: Final answer
    x = 10,211.59

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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.