Home / 20,446.21-30,669.28-6,407.31

Finding the Fourth Proportional to 20,446.21, 30,669.28 and 6,407.31

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Solution

The fourth proportional to 20,446.21, 30,669.28 and 6,407.31 is: 9,610.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.21 : 30,669.28 = 6,407.31 : x
  2. Step 2: Convert to fraction form
    20,446.21/30,669.28 = 6,407.31/x
  3. Step 3: Cross multiply
    20,446.21x = 30,669.28 × 6,407.31
  4. Step 4: Simplify right side
    20,446.21x = 196,507,552.40
  5. Step 5: Solve for x
    x = 196,507,552.40/20,446.21
  6. Step 6: Final answer
    x = 9,610.95

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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.