Home / 18,189.36-25,104.60-12,884.40

Finding the Fourth Proportional to 18,189.36, 25,104.60 and 12,884.40

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Solution

The fourth proportional to 18,189.36, 25,104.60 and 12,884.40 is: 17,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.36 : 25,104.60 = 12,884.40 : x
  2. Step 2: Convert to fraction form
    18,189.36/25,104.60 = 12,884.40/x
  3. Step 3: Cross multiply
    18,189.36x = 25,104.60 × 12,884.40
  4. Step 4: Simplify right side
    18,189.36x = 323,457,708.24
  5. Step 5: Solve for x
    x = 323,457,708.24/18,189.36
  6. Step 6: Final answer
    x = 17,782.80

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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.