Home / 21,076.34-31,619.66-6,285.20

Finding the Fourth Proportional to 21,076.34, 31,619.66 and 6,285.20

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Solution

The fourth proportional to 21,076.34, 31,619.66 and 6,285.20 is: 9,429.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.34 : 31,619.66 = 6,285.20 : x
  2. Step 2: Convert to fraction form
    21,076.34/31,619.66 = 6,285.20/x
  3. Step 3: Cross multiply
    21,076.34x = 31,619.66 × 6,285.20
  4. Step 4: Simplify right side
    21,076.34x = 198,735,697.51
  5. Step 5: Solve for x
    x = 198,735,697.51/21,076.34
  6. Step 6: Final answer
    x = 9,429.33

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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.