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Finding the Fourth Proportional to 18,754.76, 28,134.26 and 6,276.44

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Solution

The fourth proportional to 18,754.76, 28,134.26 and 6,276.44 is: 9,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.76 : 28,134.26 = 6,276.44 : x
  2. Step 2: Convert to fraction form
    18,754.76/28,134.26 = 6,276.44/x
  3. Step 3: Cross multiply
    18,754.76x = 28,134.26 × 6,276.44
  4. Step 4: Simplify right side
    18,754.76x = 176,582,994.83
  5. Step 5: Solve for x
    x = 176,582,994.83/18,754.76
  6. Step 6: Final answer
    x = 9,415.37

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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.