Home / 10,429.20-15,645.02-3,409.74

Finding the Fourth Proportional to 10,429.20, 15,645.02 and 3,409.74

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Solution

The fourth proportional to 10,429.20, 15,645.02 and 3,409.74 is: 5,115.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.20 : 15,645.02 = 3,409.74 : x
  2. Step 2: Convert to fraction form
    10,429.20/15,645.02 = 3,409.74/x
  3. Step 3: Cross multiply
    10,429.20x = 15,645.02 × 3,409.74
  4. Step 4: Simplify right side
    10,429.20x = 53,345,433.45
  5. Step 5: Solve for x
    x = 53,345,433.45/10,429.20
  6. Step 6: Final answer
    x = 5,115.01

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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.