Home / 12,700.80-19,045.67-3,933.68

Finding the Fourth Proportional to 12,700.80, 19,045.67 and 3,933.68

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Solution

The fourth proportional to 12,700.80, 19,045.67 and 3,933.68 is: 5,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.80 : 19,045.67 = 3,933.68 : x
  2. Step 2: Convert to fraction form
    12,700.80/19,045.67 = 3,933.68/x
  3. Step 3: Cross multiply
    12,700.80x = 19,045.67 × 3,933.68
  4. Step 4: Simplify right side
    12,700.80x = 74,919,456.27
  5. Step 5: Solve for x
    x = 74,919,456.27/12,700.80
  6. Step 6: Final answer
    x = 5,898.80

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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.