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Finding the Fourth Proportional to 12,674.69, 17,508.99 and 11,538.48

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Solution

The fourth proportional to 12,674.69, 17,508.99 and 11,538.48 is: 15,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.69 : 17,508.99 = 11,538.48 : x
  2. Step 2: Convert to fraction form
    12,674.69/17,508.99 = 11,538.48/x
  3. Step 3: Cross multiply
    12,674.69x = 17,508.99 × 11,538.48
  4. Step 4: Simplify right side
    12,674.69x = 202,026,994.78
  5. Step 5: Solve for x
    x = 202,026,994.78/12,674.69
  6. Step 6: Final answer
    x = 15,939.40

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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.