Home / 16,855.20-25,307.10-12,724.20

Finding the Fourth Proportional to 16,855.20, 25,307.10 and 12,724.20

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Solution

The fourth proportional to 16,855.20, 25,307.10 and 12,724.20 is: 19,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855.20 : 25,307.10 = 12,724.20 : x
  2. Step 2: Convert to fraction form
    16,855.20/25,307.10 = 12,724.20/x
  3. Step 3: Cross multiply
    16,855.20x = 25,307.10 × 12,724.20
  4. Step 4: Simplify right side
    16,855.20x = 322,012,601.82
  5. Step 5: Solve for x
    x = 322,012,601.82/16,855.20
  6. Step 6: Final answer
    x = 19,104.64

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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.