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Finding the Fourth Proportional to 18,347.31, 27,514.49 and 7,953.39

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Solution

The fourth proportional to 18,347.31, 27,514.49 and 7,953.39 is: 11,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.31 : 27,514.49 = 7,953.39 : x
  2. Step 2: Convert to fraction form
    18,347.31/27,514.49 = 7,953.39/x
  3. Step 3: Cross multiply
    18,347.31x = 27,514.49 × 7,953.39
  4. Step 4: Simplify right side
    18,347.31x = 218,833,429.85
  5. Step 5: Solve for x
    x = 218,833,429.85/18,347.31
  6. Step 6: Final answer
    x = 11,927.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.