Home / 26,320.80-39,481.20-16,989.60

Finding the Fourth Proportional to 26,320.80, 39,481.20 and 16,989.60

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Solution

The fourth proportional to 26,320.80, 39,481.20 and 16,989.60 is: 25,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,320.80 : 39,481.20 = 16,989.60 : x
  2. Step 2: Convert to fraction form
    26,320.80/39,481.20 = 16,989.60/x
  3. Step 3: Cross multiply
    26,320.80x = 39,481.20 × 16,989.60
  4. Step 4: Simplify right side
    26,320.80x = 670,769,795.52
  5. Step 5: Solve for x
    x = 670,769,795.52/26,320.80
  6. Step 6: Final answer
    x = 25,484.40

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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.