Home / 12,520.87-17,278.54-6,855.48

Finding the Fourth Proportional to 12,520.87, 17,278.54 and 6,855.48

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Solution

The fourth proportional to 12,520.87, 17,278.54 and 6,855.48 is: 9,460.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.87 : 17,278.54 = 6,855.48 : x
  2. Step 2: Convert to fraction form
    12,520.87/17,278.54 = 6,855.48/x
  3. Step 3: Cross multiply
    12,520.87x = 17,278.54 × 6,855.48
  4. Step 4: Simplify right side
    12,520.87x = 118,452,668.26
  5. Step 5: Solve for x
    x = 118,452,668.26/12,520.87
  6. Step 6: Final answer
    x = 9,460.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.