Home / 10,639.87-15,961.70-3,619.52

Finding the Fourth Proportional to 10,639.87, 15,961.70 and 3,619.52

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Solution

The fourth proportional to 10,639.87, 15,961.70 and 3,619.52 is: 5,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.87 : 15,961.70 = 3,619.52 : x
  2. Step 2: Convert to fraction form
    10,639.87/15,961.70 = 3,619.52/x
  3. Step 3: Cross multiply
    10,639.87x = 15,961.70 × 3,619.52
  4. Step 4: Simplify right side
    10,639.87x = 57,773,674.29
  5. Step 5: Solve for x
    x = 57,773,674.29/10,639.87
  6. Step 6: Final answer
    x = 5,429.93

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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.