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Finding the Fourth Proportional to 20,346.60, 30,455.10 and 14,514.60

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Solution

The fourth proportional to 20,346.60, 30,455.10 and 14,514.60 is: 21,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.60 : 30,455.10 = 14,514.60 : x
  2. Step 2: Convert to fraction form
    20,346.60/30,455.10 = 14,514.60/x
  3. Step 3: Cross multiply
    20,346.60x = 30,455.10 × 14,514.60
  4. Step 4: Simplify right side
    20,346.60x = 442,043,594.46
  5. Step 5: Solve for x
    x = 442,043,594.46/20,346.60
  6. Step 6: Final answer
    x = 21,725.67

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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.