Home / 11,989.62-16,539.80-8,011.71

Finding the Fourth Proportional to 11,989.62, 16,539.80 and 8,011.71

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Solution

The fourth proportional to 11,989.62, 16,539.80 and 8,011.71 is: 11,052.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.62 : 16,539.80 = 8,011.71 : x
  2. Step 2: Convert to fraction form
    11,989.62/16,539.80 = 8,011.71/x
  3. Step 3: Cross multiply
    11,989.62x = 16,539.80 × 8,011.71
  4. Step 4: Simplify right side
    11,989.62x = 132,512,041.00
  5. Step 5: Solve for x
    x = 132,512,041.00/11,989.62
  6. Step 6: Final answer
    x = 11,052.23

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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.