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Finding the Fourth Proportional to 14,595.45, 20,142.46 and 8,928.42

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Solution

The fourth proportional to 14,595.45, 20,142.46 and 8,928.42 is: 12,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,595.45 : 20,142.46 = 8,928.42 : x
  2. Step 2: Convert to fraction form
    14,595.45/20,142.46 = 8,928.42/x
  3. Step 3: Cross multiply
    14,595.45x = 20,142.46 × 8,928.42
  4. Step 4: Simplify right side
    14,595.45x = 179,840,278.34
  5. Step 5: Solve for x
    x = 179,840,278.34/14,595.45
  6. Step 6: Final answer
    x = 12,321.67

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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.