Home / 19,930.86-29,900.58-9,940.98

Finding the Fourth Proportional to 19,930.86, 29,900.58 and 9,940.98

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Solution

The fourth proportional to 19,930.86, 29,900.58 and 9,940.98 is: 14,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.86 : 29,900.58 = 9,940.98 : x
  2. Step 2: Convert to fraction form
    19,930.86/29,900.58 = 9,940.98/x
  3. Step 3: Cross multiply
    19,930.86x = 29,900.58 × 9,940.98
  4. Step 4: Simplify right side
    19,930.86x = 297,241,016.36
  5. Step 5: Solve for x
    x = 297,241,016.36/19,930.86
  6. Step 6: Final answer
    x = 14,913.61

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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.