Home / 15,383.64-21,229.41-8,310.06

Finding the Fourth Proportional to 15,383.64, 21,229.41 and 8,310.06

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Solution

The fourth proportional to 15,383.64, 21,229.41 and 8,310.06 is: 11,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.64 : 21,229.41 = 8,310.06 : x
  2. Step 2: Convert to fraction form
    15,383.64/21,229.41 = 8,310.06/x
  3. Step 3: Cross multiply
    15,383.64x = 21,229.41 × 8,310.06
  4. Step 4: Simplify right side
    15,383.64x = 176,417,670.86
  5. Step 5: Solve for x
    x = 176,417,670.86/15,383.64
  6. Step 6: Final answer
    x = 11,467.88

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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.