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Finding the Fourth Proportional to 18,274.55, 27,412.64 and 5,126.63

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Solution

The fourth proportional to 18,274.55, 27,412.64 and 5,126.63 is: 7,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.55 : 27,412.64 = 5,126.63 : x
  2. Step 2: Convert to fraction form
    18,274.55/27,412.64 = 5,126.63/x
  3. Step 3: Cross multiply
    18,274.55x = 27,412.64 × 5,126.63
  4. Step 4: Simplify right side
    18,274.55x = 140,534,436.97
  5. Step 5: Solve for x
    x = 140,534,436.97/18,274.55
  6. Step 6: Final answer
    x = 7,690.17

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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.