Home / 21,271.23-31,908.60-6,480.27

Finding the Fourth Proportional to 21,271.23, 31,908.60 and 6,480.27

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Solution

The fourth proportional to 21,271.23, 31,908.60 and 6,480.27 is: 9,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.23 : 31,908.60 = 6,480.27 : x
  2. Step 2: Convert to fraction form
    21,271.23/31,908.60 = 6,480.27/x
  3. Step 3: Cross multiply
    21,271.23x = 31,908.60 × 6,480.27
  4. Step 4: Simplify right side
    21,271.23x = 206,776,343.32
  5. Step 5: Solve for x
    x = 206,776,343.32/21,271.23
  6. Step 6: Final answer
    x = 9,720.94

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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.