Home / 16,808.78-25,216.80-5,121.68

Finding the Fourth Proportional to 16,808.78, 25,216.80 and 5,121.68

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Solution

The fourth proportional to 16,808.78, 25,216.80 and 5,121.68 is: 7,683.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,808.78 : 25,216.80 = 5,121.68 : x
  2. Step 2: Convert to fraction form
    16,808.78/25,216.80 = 5,121.68/x
  3. Step 3: Cross multiply
    16,808.78x = 25,216.80 × 5,121.68
  4. Step 4: Simplify right side
    16,808.78x = 129,152,380.22
  5. Step 5: Solve for x
    x = 129,152,380.22/16,808.78
  6. Step 6: Final answer
    x = 7,683.63

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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.