Home / 13,170.78-19,758.90-4,406.38

Finding the Fourth Proportional to 13,170.78, 19,758.90 and 4,406.38

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Solution

The fourth proportional to 13,170.78, 19,758.90 and 4,406.38 is: 6,610.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.78 : 19,758.90 = 4,406.38 : x
  2. Step 2: Convert to fraction form
    13,170.78/19,758.90 = 4,406.38/x
  3. Step 3: Cross multiply
    13,170.78x = 19,758.90 × 4,406.38
  4. Step 4: Simplify right side
    13,170.78x = 87,065,221.78
  5. Step 5: Solve for x
    x = 87,065,221.78/13,170.78
  6. Step 6: Final answer
    x = 6,610.48

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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.