Home / 12,880.96-17,758.27-11,012.61

Finding the Fourth Proportional to 12,880.96, 17,758.27 and 11,012.61

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Solution

The fourth proportional to 12,880.96, 17,758.27 and 11,012.61 is: 15,182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.96 : 17,758.27 = 11,012.61 : x
  2. Step 2: Convert to fraction form
    12,880.96/17,758.27 = 11,012.61/x
  3. Step 3: Cross multiply
    12,880.96x = 17,758.27 × 11,012.61
  4. Step 4: Simplify right side
    12,880.96x = 195,564,874.25
  5. Step 5: Solve for x
    x = 195,564,874.25/12,880.96
  6. Step 6: Final answer
    x = 15,182.48

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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.