Home / 21,177.90-31,754.70-6,384.60

Finding the Fourth Proportional to 21,177.90, 31,754.70 and 6,384.60

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Solution

The fourth proportional to 21,177.90, 31,754.70 and 6,384.60 is: 9,573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.90 : 31,754.70 = 6,384.60 : x
  2. Step 2: Convert to fraction form
    21,177.90/31,754.70 = 6,384.60/x
  3. Step 3: Cross multiply
    21,177.90x = 31,754.70 × 6,384.60
  4. Step 4: Simplify right side
    21,177.90x = 202,741,057.62
  5. Step 5: Solve for x
    x = 202,741,057.62/21,177.90
  6. Step 6: Final answer
    x = 9,573.24

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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.