Home / 11,386.12-17,079.96-3,989.72

Finding the Fourth Proportional to 11,386.12, 17,079.96 and 3,989.72

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Solution

The fourth proportional to 11,386.12, 17,079.96 and 3,989.72 is: 5,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.12 : 17,079.96 = 3,989.72 : x
  2. Step 2: Convert to fraction form
    11,386.12/17,079.96 = 3,989.72/x
  3. Step 3: Cross multiply
    11,386.12x = 17,079.96 × 3,989.72
  4. Step 4: Simplify right side
    11,386.12x = 68,144,258.01
  5. Step 5: Solve for x
    x = 68,144,258.01/11,386.12
  6. Step 6: Final answer
    x = 5,984.85

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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.