Home / 12,396.12-17,094.92-8,139.68

Finding the Fourth Proportional to 12,396.12, 17,094.92 and 8,139.68

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Solution

The fourth proportional to 12,396.12, 17,094.92 and 8,139.68 is: 11,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.12 : 17,094.92 = 8,139.68 : x
  2. Step 2: Convert to fraction form
    12,396.12/17,094.92 = 8,139.68/x
  3. Step 3: Cross multiply
    12,396.12x = 17,094.92 × 8,139.68
  4. Step 4: Simplify right side
    12,396.12x = 139,147,052.25
  5. Step 5: Solve for x
    x = 139,147,052.25/12,396.12
  6. Step 6: Final answer
    x = 11,225.05

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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.