Home / 18,512.28-25,546.32-10,128.60

Finding the Fourth Proportional to 18,512.28, 25,546.32 and 10,128.60

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Solution

The fourth proportional to 18,512.28, 25,546.32 and 10,128.60 is: 13,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.28 : 25,546.32 = 10,128.60 : x
  2. Step 2: Convert to fraction form
    18,512.28/25,546.32 = 10,128.60/x
  3. Step 3: Cross multiply
    18,512.28x = 25,546.32 × 10,128.60
  4. Step 4: Simplify right side
    18,512.28x = 258,748,456.75
  5. Step 5: Solve for x
    x = 258,748,456.75/18,512.28
  6. Step 6: Final answer
    x = 13,977.13

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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.