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Finding the Fourth Proportional to 18,674.22, 28,011.06 and 7,577.94

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Solution

The fourth proportional to 18,674.22, 28,011.06 and 7,577.94 is: 11,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.22 : 28,011.06 = 7,577.94 : x
  2. Step 2: Convert to fraction form
    18,674.22/28,011.06 = 7,577.94/x
  3. Step 3: Cross multiply
    18,674.22x = 28,011.06 × 7,577.94
  4. Step 4: Simplify right side
    18,674.22x = 212,266,132.02
  5. Step 5: Solve for x
    x = 212,266,132.02/18,674.22
  6. Step 6: Final answer
    x = 11,366.80

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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.