Home / 19,519.94-29,281.55-7,672.78

Finding the Fourth Proportional to 19,519.94, 29,281.55 and 7,672.78

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Solution

The fourth proportional to 19,519.94, 29,281.55 and 7,672.78 is: 11,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,519.94 : 29,281.55 = 7,672.78 : x
  2. Step 2: Convert to fraction form
    19,519.94/29,281.55 = 7,672.78/x
  3. Step 3: Cross multiply
    19,519.94x = 29,281.55 × 7,672.78
  4. Step 4: Simplify right side
    19,519.94x = 224,670,767.90
  5. Step 5: Solve for x
    x = 224,670,767.90/19,519.94
  6. Step 6: Final answer
    x = 11,509.81

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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.