Home / 11,886.12-17,828.45-3,120.84

Finding the Fourth Proportional to 11,886.12, 17,828.45 and 3,120.84

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Solution

The fourth proportional to 11,886.12, 17,828.45 and 3,120.84 is: 4,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.12 : 17,828.45 = 3,120.84 : x
  2. Step 2: Convert to fraction form
    11,886.12/17,828.45 = 3,120.84/x
  3. Step 3: Cross multiply
    11,886.12x = 17,828.45 × 3,120.84
  4. Step 4: Simplify right side
    11,886.12x = 55,639,739.90
  5. Step 5: Solve for x
    x = 55,639,739.90/11,886.12
  6. Step 6: Final answer
    x = 4,681.07

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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.