Home / 18,305.36-25,260.72-9,921.68

Finding the Fourth Proportional to 18,305.36, 25,260.72 and 9,921.68

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Solution

The fourth proportional to 18,305.36, 25,260.72 and 9,921.68 is: 13,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.36 : 25,260.72 = 9,921.68 : x
  2. Step 2: Convert to fraction form
    18,305.36/25,260.72 = 9,921.68/x
  3. Step 3: Cross multiply
    18,305.36x = 25,260.72 × 9,921.68
  4. Step 4: Simplify right side
    18,305.36x = 250,628,780.41
  5. Step 5: Solve for x
    x = 250,628,780.41/18,305.36
  6. Step 6: Final answer
    x = 13,691.55

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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.