Home / 19,008.46-28,520-13,391.53

Finding the Fourth Proportional to 19,008.46, 28,520 and 13,391.53

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Solution

The fourth proportional to 19,008.46, 28,520 and 13,391.53 is: 20,092.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.46 : 28,520 = 13,391.53 : x
  2. Step 2: Convert to fraction form
    19,008.46/28,520 = 13,391.53/x
  3. Step 3: Cross multiply
    19,008.46x = 28,520 × 13,391.53
  4. Step 4: Simplify right side
    19,008.46x = 381,926,435.60
  5. Step 5: Solve for x
    x = 381,926,435.60/19,008.46
  6. Step 6: Final answer
    x = 20,092.44

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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.