Home / 11,459.46-17,189.21-3,139.55

Finding the Fourth Proportional to 11,459.46, 17,189.21 and 3,139.55

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Solution

The fourth proportional to 11,459.46, 17,189.21 and 3,139.55 is: 4,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.46 : 17,189.21 = 3,139.55 : x
  2. Step 2: Convert to fraction form
    11,459.46/17,189.21 = 3,139.55/x
  3. Step 3: Cross multiply
    11,459.46x = 17,189.21 × 3,139.55
  4. Step 4: Simplify right side
    11,459.46x = 53,966,368.56
  5. Step 5: Solve for x
    x = 53,966,368.56/11,459.46
  6. Step 6: Final answer
    x = 4,709.33

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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.