Home / 10,429.47-15,646.62-3,409.80

Finding the Fourth Proportional to 10,429.47, 15,646.62 and 3,409.80

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Solution

The fourth proportional to 10,429.47, 15,646.62 and 3,409.80 is: 5,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.47 : 15,646.62 = 3,409.80 : x
  2. Step 2: Convert to fraction form
    10,429.47/15,646.62 = 3,409.80/x
  3. Step 3: Cross multiply
    10,429.47x = 15,646.62 × 3,409.80
  4. Step 4: Simplify right side
    10,429.47x = 53,351,844.88
  5. Step 5: Solve for x
    x = 53,351,844.88/10,429.47
  6. Step 6: Final answer
    x = 5,115.49

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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.