Home / 21,270.34-31,896.25-6,475.82

Finding the Fourth Proportional to 21,270.34, 31,896.25 and 6,475.82

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Solution

The fourth proportional to 21,270.34, 31,896.25 and 6,475.82 is: 9,710.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.34 : 31,896.25 = 6,475.82 : x
  2. Step 2: Convert to fraction form
    21,270.34/31,896.25 = 6,475.82/x
  3. Step 3: Cross multiply
    21,270.34x = 31,896.25 × 6,475.82
  4. Step 4: Simplify right side
    21,270.34x = 206,554,373.68
  5. Step 5: Solve for x
    x = 206,554,373.68/21,270.34
  6. Step 6: Final answer
    x = 9,710.91

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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.