Home / 11,966.50-16,527.60-7,980.70

Finding the Fourth Proportional to 11,966.50, 16,527.60 and 7,980.70

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Solution

The fourth proportional to 11,966.50, 16,527.60 and 7,980.70 is: 11,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,966.50 : 16,527.60 = 7,980.70 : x
  2. Step 2: Convert to fraction form
    11,966.50/16,527.60 = 7,980.70/x
  3. Step 3: Cross multiply
    11,966.50x = 16,527.60 × 7,980.70
  4. Step 4: Simplify right side
    11,966.50x = 131,901,817.32
  5. Step 5: Solve for x
    x = 131,901,817.32/11,966.50
  6. Step 6: Final answer
    x = 11,022.59

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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.