Home / 11,190.10-16,821.60-7,925.80

Finding the Fourth Proportional to 11,190.10, 16,821.60 and 7,925.80

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Solution

The fourth proportional to 11,190.10, 16,821.60 and 7,925.80 is: 11,914.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.10 : 16,821.60 = 7,925.80 : x
  2. Step 2: Convert to fraction form
    11,190.10/16,821.60 = 7,925.80/x
  3. Step 3: Cross multiply
    11,190.10x = 16,821.60 × 7,925.80
  4. Step 4: Simplify right side
    11,190.10x = 133,324,637.28
  5. Step 5: Solve for x
    x = 133,324,637.28/11,190.10
  6. Step 6: Final answer
    x = 11,914.52

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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.