Home / 11,240.29-16,860.74-2,920.12

Finding the Fourth Proportional to 11,240.29, 16,860.74 and 2,920.12

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Solution

The fourth proportional to 11,240.29, 16,860.74 and 2,920.12 is: 4,380.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.29 : 16,860.74 = 2,920.12 : x
  2. Step 2: Convert to fraction form
    11,240.29/16,860.74 = 2,920.12/x
  3. Step 3: Cross multiply
    11,240.29x = 16,860.74 × 2,920.12
  4. Step 4: Simplify right side
    11,240.29x = 49,235,384.09
  5. Step 5: Solve for x
    x = 49,235,384.09/11,240.29
  6. Step 6: Final answer
    x = 4,380.26

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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.