Home / 28,134.64-42,208.02-8,414.80

Finding the Fourth Proportional to 28,134.64, 42,208.02 and 8,414.80

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Solution

The fourth proportional to 28,134.64, 42,208.02 and 8,414.80 is: 12,624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.64 : 42,208.02 = 8,414.80 : x
  2. Step 2: Convert to fraction form
    28,134.64/42,208.02 = 8,414.80/x
  3. Step 3: Cross multiply
    28,134.64x = 42,208.02 × 8,414.80
  4. Step 4: Simplify right side
    28,134.64x = 355,172,046.70
  5. Step 5: Solve for x
    x = 355,172,046.70/28,134.64
  6. Step 6: Final answer
    x = 12,624.01

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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.