Home / 12,642.67-18,964.82-3,876.45

Finding the Fourth Proportional to 12,642.67, 18,964.82 and 3,876.45

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Solution

The fourth proportional to 12,642.67, 18,964.82 and 3,876.45 is: 5,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.67 : 18,964.82 = 3,876.45 : x
  2. Step 2: Convert to fraction form
    12,642.67/18,964.82 = 3,876.45/x
  3. Step 3: Cross multiply
    12,642.67x = 18,964.82 × 3,876.45
  4. Step 4: Simplify right side
    12,642.67x = 73,516,176.49
  5. Step 5: Solve for x
    x = 73,516,176.49/12,642.67
  6. Step 6: Final answer
    x = 5,814.92

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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.