Home / 12,190.56-16,821.60-6,884.40

Finding the Fourth Proportional to 12,190.56, 16,821.60 and 6,884.40

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Solution

The fourth proportional to 12,190.56, 16,821.60 and 6,884.40 is: 9,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.56 : 16,821.60 = 6,884.40 : x
  2. Step 2: Convert to fraction form
    12,190.56/16,821.60 = 6,884.40/x
  3. Step 3: Cross multiply
    12,190.56x = 16,821.60 × 6,884.40
  4. Step 4: Simplify right side
    12,190.56x = 115,806,623.04
  5. Step 5: Solve for x
    x = 115,806,623.04/12,190.56
  6. Step 6: Final answer
    x = 9,499.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.