Home / 10,913.80-16,370.70-7,997.80

Finding the Fourth Proportional to 10,913.80, 16,370.70 and 7,997.80

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Solution

The fourth proportional to 10,913.80, 16,370.70 and 7,997.80 is: 11,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.80 : 16,370.70 = 7,997.80 : x
  2. Step 2: Convert to fraction form
    10,913.80/16,370.70 = 7,997.80/x
  3. Step 3: Cross multiply
    10,913.80x = 16,370.70 × 7,997.80
  4. Step 4: Simplify right side
    10,913.80x = 130,929,584.46
  5. Step 5: Solve for x
    x = 130,929,584.46/10,913.80
  6. Step 6: Final answer
    x = 11,996.70

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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.