Home / 18,678.52-28,021.88-5,531.92

Finding the Fourth Proportional to 18,678.52, 28,021.88 and 5,531.92

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Solution

The fourth proportional to 18,678.52, 28,021.88 and 5,531.92 is: 8,299.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.52 : 28,021.88 = 5,531.92 : x
  2. Step 2: Convert to fraction form
    18,678.52/28,021.88 = 5,531.92/x
  3. Step 3: Cross multiply
    18,678.52x = 28,021.88 × 5,531.92
  4. Step 4: Simplify right side
    18,678.52x = 155,014,658.30
  5. Step 5: Solve for x
    x = 155,014,658.30/18,678.52
  6. Step 6: Final answer
    x = 8,299.09

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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.