Home / 10,770.80-16,156.20-9,431.60

Finding the Fourth Proportional to 10,770.80, 16,156.20 and 9,431.60

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Solution

The fourth proportional to 10,770.80, 16,156.20 and 9,431.60 is: 14,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,770.80 : 16,156.20 = 9,431.60 : x
  2. Step 2: Convert to fraction form
    10,770.80/16,156.20 = 9,431.60/x
  3. Step 3: Cross multiply
    10,770.80x = 16,156.20 × 9,431.60
  4. Step 4: Simplify right side
    10,770.80x = 152,378,815.92
  5. Step 5: Solve for x
    x = 152,378,815.92/10,770.80
  6. Step 6: Final answer
    x = 14,147.40

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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.