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Finding the Fourth Proportional to 18,274.60, 27,411.90 and 11,713.60

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Solution

The fourth proportional to 18,274.60, 27,411.90 and 11,713.60 is: 17,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.60 : 27,411.90 = 11,713.60 : x
  2. Step 2: Convert to fraction form
    18,274.60/27,411.90 = 11,713.60/x
  3. Step 3: Cross multiply
    18,274.60x = 27,411.90 × 11,713.60
  4. Step 4: Simplify right side
    18,274.60x = 321,092,031.84
  5. Step 5: Solve for x
    x = 321,092,031.84/18,274.60
  6. Step 6: Final answer
    x = 17,570.40

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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.