Home / 10,429.56-15,644.26-2,638.36

Finding the Fourth Proportional to 10,429.56, 15,644.26 and 2,638.36

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Solution

The fourth proportional to 10,429.56, 15,644.26 and 2,638.36 is: 3,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.56 : 15,644.26 = 2,638.36 : x
  2. Step 2: Convert to fraction form
    10,429.56/15,644.26 = 2,638.36/x
  3. Step 3: Cross multiply
    10,429.56x = 15,644.26 × 2,638.36
  4. Step 4: Simplify right side
    10,429.56x = 41,275,189.81
  5. Step 5: Solve for x
    x = 41,275,189.81/10,429.56
  6. Step 6: Final answer
    x = 3,957.52

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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.