Home / 15,383.86-21,229.70-8,310.26

Finding the Fourth Proportional to 15,383.86, 21,229.70 and 8,310.26

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Solution

The fourth proportional to 15,383.86, 21,229.70 and 8,310.26 is: 11,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.86 : 21,229.70 = 8,310.26 : x
  2. Step 2: Convert to fraction form
    15,383.86/21,229.70 = 8,310.26/x
  3. Step 3: Cross multiply
    15,383.86x = 21,229.70 × 8,310.26
  4. Step 4: Simplify right side
    15,383.86x = 176,424,326.72
  5. Step 5: Solve for x
    x = 176,424,326.72/15,383.86
  6. Step 6: Final answer
    x = 11,468.14

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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.