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Finding the Fourth Proportional to 11,614.54, 17,421.81 and 4,687.42

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Solution

The fourth proportional to 11,614.54, 17,421.81 and 4,687.42 is: 7,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,614.54 : 17,421.81 = 4,687.42 : x
  2. Step 2: Convert to fraction form
    11,614.54/17,421.81 = 4,687.42/x
  3. Step 3: Cross multiply
    11,614.54x = 17,421.81 × 4,687.42
  4. Step 4: Simplify right side
    11,614.54x = 81,663,340.63
  5. Step 5: Solve for x
    x = 81,663,340.63/11,614.54
  6. Step 6: Final answer
    x = 7,031.13

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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.