Home / 9,940.20-14,894.10-7,315.80

Finding the Fourth Proportional to 9,940.20, 14,894.10 and 7,315.80

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Solution

The fourth proportional to 9,940.20, 14,894.10 and 7,315.80 is: 10,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.20 : 14,894.10 = 7,315.80 : x
  2. Step 2: Convert to fraction form
    9,940.20/14,894.10 = 7,315.80/x
  3. Step 3: Cross multiply
    9,940.20x = 14,894.10 × 7,315.80
  4. Step 4: Simplify right side
    9,940.20x = 108,962,256.78
  5. Step 5: Solve for x
    x = 108,962,256.78/9,940.20
  6. Step 6: Final answer
    x = 10,961.78

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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.