Home / 12,619.37-18,931.49-4,299.86

Finding the Fourth Proportional to 12,619.37, 18,931.49 and 4,299.86

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Solution

The fourth proportional to 12,619.37, 18,931.49 and 4,299.86 is: 6,450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.37 : 18,931.49 = 4,299.86 : x
  2. Step 2: Convert to fraction form
    12,619.37/18,931.49 = 4,299.86/x
  3. Step 3: Cross multiply
    12,619.37x = 18,931.49 × 4,299.86
  4. Step 4: Simplify right side
    12,619.37x = 81,402,798.55
  5. Step 5: Solve for x
    x = 81,402,798.55/12,619.37
  6. Step 6: Final answer
    x = 6,450.62

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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.