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Finding the Fourth Proportional to 15,393.92, 21,233.76 and 10,676.48

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Solution

The fourth proportional to 15,393.92, 21,233.76 and 10,676.48 is: 14,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.92 : 21,233.76 = 10,676.48 : x
  2. Step 2: Convert to fraction form
    15,393.92/21,233.76 = 10,676.48/x
  3. Step 3: Cross multiply
    15,393.92x = 21,233.76 × 10,676.48
  4. Step 4: Simplify right side
    15,393.92x = 226,701,813.96
  5. Step 5: Solve for x
    x = 226,701,813.96/15,393.92
  6. Step 6: Final answer
    x = 14,726.71

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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.