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Finding the Fourth Proportional to 18,754.74, 28,134.54 and 6,274.26

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Solution

The fourth proportional to 18,754.74, 28,134.54 and 6,274.26 is: 9,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.74 : 28,134.54 = 6,274.26 : x
  2. Step 2: Convert to fraction form
    18,754.74/28,134.54 = 6,274.26/x
  3. Step 3: Cross multiply
    18,754.74x = 28,134.54 × 6,274.26
  4. Step 4: Simplify right side
    18,754.74x = 176,523,418.94
  5. Step 5: Solve for x
    x = 176,523,418.94/18,754.74
  6. Step 6: Final answer
    x = 9,412.20

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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.