Home / 21,072.06-31,608.08-6,280.60

Finding the Fourth Proportional to 21,072.06, 31,608.08 and 6,280.60

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Solution

The fourth proportional to 21,072.06, 31,608.08 and 6,280.60 is: 9,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.06 : 31,608.08 = 6,280.60 : x
  2. Step 2: Convert to fraction form
    21,072.06/31,608.08 = 6,280.60/x
  3. Step 3: Cross multiply
    21,072.06x = 31,608.08 × 6,280.60
  4. Step 4: Simplify right side
    21,072.06x = 198,517,707.25
  5. Step 5: Solve for x
    x = 198,517,707.25/21,072.06
  6. Step 6: Final answer
    x = 9,420.90

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1.5x scale

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.