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Finding the Fourth Proportional to 13,649.80, 20,453.04 and 9,934.96

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Solution

The fourth proportional to 13,649.80, 20,453.04 and 9,934.96 is: 14,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.80 : 20,453.04 = 9,934.96 : x
  2. Step 2: Convert to fraction form
    13,649.80/20,453.04 = 9,934.96/x
  3. Step 3: Cross multiply
    13,649.80x = 20,453.04 × 9,934.96
  4. Step 4: Simplify right side
    13,649.80x = 203,200,134.28
  5. Step 5: Solve for x
    x = 203,200,134.28/13,649.80
  6. Step 6: Final answer
    x = 14,886.67

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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.