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Finding the Fourth Proportional to 17,756.80, 26,610.90 and 11,816.80

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Solution

The fourth proportional to 17,756.80, 26,610.90 and 11,816.80 is: 17,709.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,756.80 : 26,610.90 = 11,816.80 : x
  2. Step 2: Convert to fraction form
    17,756.80/26,610.90 = 11,816.80/x
  3. Step 3: Cross multiply
    17,756.80x = 26,610.90 × 11,816.80
  4. Step 4: Simplify right side
    17,756.80x = 314,455,683.12
  5. Step 5: Solve for x
    x = 314,455,683.12/17,756.80
  6. Step 6: Final answer
    x = 17,709.03

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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.