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Finding the Fourth Proportional to 16,908.80, 25,357.60 and 5,813.60

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Solution

The fourth proportional to 16,908.80, 25,357.60 and 5,813.60 is: 8,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,908.80 : 25,357.60 = 5,813.60 : x
  2. Step 2: Convert to fraction form
    16,908.80/25,357.60 = 5,813.60/x
  3. Step 3: Cross multiply
    16,908.80x = 25,357.60 × 5,813.60
  4. Step 4: Simplify right side
    16,908.80x = 147,418,943.36
  5. Step 5: Solve for x
    x = 147,418,943.36/16,908.80
  6. Step 6: Final answer
    x = 8,718.47

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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.