Home / 10,579.40-15,872.88-6,427.88

Finding the Fourth Proportional to 10,579.40, 15,872.88 and 6,427.88

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Solution

The fourth proportional to 10,579.40, 15,872.88 and 6,427.88 is: 9,644.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,579.40 : 15,872.88 = 6,427.88 : x
  2. Step 2: Convert to fraction form
    10,579.40/15,872.88 = 6,427.88/x
  3. Step 3: Cross multiply
    10,579.40x = 15,872.88 × 6,427.88
  4. Step 4: Simplify right side
    10,579.40x = 102,028,967.89
  5. Step 5: Solve for x
    x = 102,028,967.89/10,579.40
  6. Step 6: Final answer
    x = 9,644.12

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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.