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Finding the Fourth Proportional to 20,914.46, 28,862.02 and 11,483.64

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Solution

The fourth proportional to 20,914.46, 28,862.02 and 11,483.64 is: 15,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.46 : 28,862.02 = 11,483.64 : x
  2. Step 2: Convert to fraction form
    20,914.46/28,862.02 = 11,483.64/x
  3. Step 3: Cross multiply
    20,914.46x = 28,862.02 × 11,483.64
  4. Step 4: Simplify right side
    20,914.46x = 331,441,047.35
  5. Step 5: Solve for x
    x = 331,441,047.35/20,914.46
  6. Step 6: Final answer
    x = 15,847.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.