Home / 16,828.80-25,243.20-5,145.60

Finding the Fourth Proportional to 16,828.80, 25,243.20 and 5,145.60

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Solution

The fourth proportional to 16,828.80, 25,243.20 and 5,145.60 is: 7,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,828.80 : 25,243.20 = 5,145.60 : x
  2. Step 2: Convert to fraction form
    16,828.80/25,243.20 = 5,145.60/x
  3. Step 3: Cross multiply
    16,828.80x = 25,243.20 × 5,145.60
  4. Step 4: Simplify right side
    16,828.80x = 129,891,409.92
  5. Step 5: Solve for x
    x = 129,891,409.92/16,828.80
  6. Step 6: Final answer
    x = 7,718.40

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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.