Home / 12,170.42-18,256.56-3,405.22

Finding the Fourth Proportional to 12,170.42, 18,256.56 and 3,405.22

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Solution

The fourth proportional to 12,170.42, 18,256.56 and 3,405.22 is: 5,108.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.42 : 18,256.56 = 3,405.22 : x
  2. Step 2: Convert to fraction form
    12,170.42/18,256.56 = 3,405.22/x
  3. Step 3: Cross multiply
    12,170.42x = 18,256.56 × 3,405.22
  4. Step 4: Simplify right side
    12,170.42x = 62,167,603.24
  5. Step 5: Solve for x
    x = 62,167,603.24/12,170.42
  6. Step 6: Final answer
    x = 5,108.09

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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.