Home / 21,077.82-31,627.67-9,388.31

Finding the Fourth Proportional to 21,077.82, 31,627.67 and 9,388.31

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Solution

The fourth proportional to 21,077.82, 31,627.67 and 9,388.31 is: 14,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.82 : 31,627.67 = 9,388.31 : x
  2. Step 2: Convert to fraction form
    21,077.82/31,627.67 = 9,388.31/x
  3. Step 3: Cross multiply
    21,077.82x = 31,627.67 × 9,388.31
  4. Step 4: Simplify right side
    21,077.82x = 296,930,165.46
  5. Step 5: Solve for x
    x = 296,930,165.46/21,077.82
  6. Step 6: Final answer
    x = 14,087.33

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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.