Home / 13,864.92-20,790.52-7,940.88

Finding the Fourth Proportional to 13,864.92, 20,790.52 and 7,940.88

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Solution

The fourth proportional to 13,864.92, 20,790.52 and 7,940.88 is: 11,907.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.92 : 20,790.52 = 7,940.88 : x
  2. Step 2: Convert to fraction form
    13,864.92/20,790.52 = 7,940.88/x
  3. Step 3: Cross multiply
    13,864.92x = 20,790.52 × 7,940.88
  4. Step 4: Simplify right side
    13,864.92x = 165,095,024.46
  5. Step 5: Solve for x
    x = 165,095,024.46/13,864.92
  6. Step 6: Final answer
    x = 11,907.39

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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.