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Finding the Fourth Proportional to 19,235.88, 28,863.98 and 13,649.64

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Solution

The fourth proportional to 19,235.88, 28,863.98 and 13,649.64 is: 20,481.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.88 : 28,863.98 = 13,649.64 : x
  2. Step 2: Convert to fraction form
    19,235.88/28,863.98 = 13,649.64/x
  3. Step 3: Cross multiply
    19,235.88x = 28,863.98 × 13,649.64
  4. Step 4: Simplify right side
    19,235.88x = 393,982,938.18
  5. Step 5: Solve for x
    x = 393,982,938.18/19,235.88
  6. Step 6: Final answer
    x = 20,481.67

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1.5x scale

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.