Home / 28,134.88-42,204.32-8,411.84

Finding the Fourth Proportional to 28,134.88, 42,204.32 and 8,411.84

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Solution

The fourth proportional to 28,134.88, 42,204.32 and 8,411.84 is: 12,618.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.88 : 42,204.32 = 8,411.84 : x
  2. Step 2: Convert to fraction form
    28,134.88/42,204.32 = 8,411.84/x
  3. Step 3: Cross multiply
    28,134.88x = 42,204.32 × 8,411.84
  4. Step 4: Simplify right side
    28,134.88x = 355,015,987.15
  5. Step 5: Solve for x
    x = 355,015,987.15/28,134.88
  6. Step 6: Final answer
    x = 12,618.36

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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.