Home / 21,018.96-31,528.44-6,228.09

Finding the Fourth Proportional to 21,018.96, 31,528.44 and 6,228.09

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Solution

The fourth proportional to 21,018.96, 31,528.44 and 6,228.09 is: 9,342.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.96 : 31,528.44 = 6,228.09 : x
  2. Step 2: Convert to fraction form
    21,018.96/31,528.44 = 6,228.09/x
  3. Step 3: Cross multiply
    21,018.96x = 31,528.44 × 6,228.09
  4. Step 4: Simplify right side
    21,018.96x = 196,361,961.88
  5. Step 5: Solve for x
    x = 196,361,961.88/21,018.96
  6. Step 6: Final answer
    x = 9,342.14

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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.