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Finding the Fourth Proportional to 10,958.70, 16,438.05 and 4,389.60

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Solution

The fourth proportional to 10,958.70, 16,438.05 and 4,389.60 is: 6,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.70 : 16,438.05 = 4,389.60 : x
  2. Step 2: Convert to fraction form
    10,958.70/16,438.05 = 4,389.60/x
  3. Step 3: Cross multiply
    10,958.70x = 16,438.05 × 4,389.60
  4. Step 4: Simplify right side
    10,958.70x = 72,156,464.28
  5. Step 5: Solve for x
    x = 72,156,464.28/10,958.70
  6. Step 6: Final answer
    x = 6,584.40

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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.