Home / 19,211.64-28,771.02-15,900.36

Finding the Fourth Proportional to 19,211.64, 28,771.02 and 15,900.36

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Solution

The fourth proportional to 19,211.64, 28,771.02 and 15,900.36 is: 23,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.64 : 28,771.02 = 15,900.36 : x
  2. Step 2: Convert to fraction form
    19,211.64/28,771.02 = 15,900.36/x
  3. Step 3: Cross multiply
    19,211.64x = 28,771.02 × 15,900.36
  4. Step 4: Simplify right side
    19,211.64x = 457,469,575.57
  5. Step 5: Solve for x
    x = 457,469,575.57/19,211.64
  6. Step 6: Final answer
    x = 23,812.10

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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.