Home / 12,945.35-19,421.06-4,179.93

Finding the Fourth Proportional to 12,945.35, 19,421.06 and 4,179.93

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Solution

The fourth proportional to 12,945.35, 19,421.06 and 4,179.93 is: 6,270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.35 : 19,421.06 = 4,179.93 : x
  2. Step 2: Convert to fraction form
    12,945.35/19,421.06 = 4,179.93/x
  3. Step 3: Cross multiply
    12,945.35x = 19,421.06 × 4,179.93
  4. Step 4: Simplify right side
    12,945.35x = 81,178,650.43
  5. Step 5: Solve for x
    x = 81,178,650.43/12,945.35
  6. Step 6: Final answer
    x = 6,270.88

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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.