Home / 13,966.31-20,921.41-6,459.35

Finding the Fourth Proportional to 13,966.31, 20,921.41 and 6,459.35

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Solution

The fourth proportional to 13,966.31, 20,921.41 and 6,459.35 is: 9,676.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,966.31 : 20,921.41 = 6,459.35 : x
  2. Step 2: Convert to fraction form
    13,966.31/20,921.41 = 6,459.35/x
  3. Step 3: Cross multiply
    13,966.31x = 20,921.41 × 6,459.35
  4. Step 4: Simplify right side
    13,966.31x = 135,138,709.68
  5. Step 5: Solve for x
    x = 135,138,709.68/13,966.31
  6. Step 6: Final answer
    x = 9,676.05

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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.