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Finding the Fourth Proportional to 18,725.52, 28,080.48 and 7,624.68

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Solution

The fourth proportional to 18,725.52, 28,080.48 and 7,624.68 is: 11,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.52 : 28,080.48 = 7,624.68 : x
  2. Step 2: Convert to fraction form
    18,725.52/28,080.48 = 7,624.68/x
  3. Step 3: Cross multiply
    18,725.52x = 28,080.48 × 7,624.68
  4. Step 4: Simplify right side
    18,725.52x = 214,104,674.25
  5. Step 5: Solve for x
    x = 214,104,674.25/18,725.52
  6. Step 6: Final answer
    x = 11,433.84

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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.