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Finding the Fourth Proportional to 13,527.40, 18,673 and 12,108.58

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Solution

The fourth proportional to 13,527.40, 18,673 and 12,108.58 is: 16,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.40 : 18,673 = 12,108.58 : x
  2. Step 2: Convert to fraction form
    13,527.40/18,673 = 12,108.58/x
  3. Step 3: Cross multiply
    13,527.40x = 18,673 × 12,108.58
  4. Step 4: Simplify right side
    13,527.40x = 226,103,514.34
  5. Step 5: Solve for x
    x = 226,103,514.34/13,527.40
  6. Step 6: Final answer
    x = 16,714.48

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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.