Home / 47,930.94-71,900.73-12,870.36

Finding the Fourth Proportional to 47,930.94, 71,900.73 and 12,870.36

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Solution

The fourth proportional to 47,930.94, 71,900.73 and 12,870.36 is: 19,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,930.94 : 71,900.73 = 12,870.36 : x
  2. Step 2: Convert to fraction form
    47,930.94/71,900.73 = 12,870.36/x
  3. Step 3: Cross multiply
    47,930.94x = 71,900.73 × 12,870.36
  4. Step 4: Simplify right side
    47,930.94x = 925,388,279.36
  5. Step 5: Solve for x
    x = 925,388,279.36/47,930.94
  6. Step 6: Final answer
    x = 19,306.70

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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.