Home / 11,787.12-17,686.76-5,217.92

Finding the Fourth Proportional to 11,787.12, 17,686.76 and 5,217.92

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Solution

The fourth proportional to 11,787.12, 17,686.76 and 5,217.92 is: 7,829.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.12 : 17,686.76 = 5,217.92 : x
  2. Step 2: Convert to fraction form
    11,787.12/17,686.76 = 5,217.92/x
  3. Step 3: Cross multiply
    11,787.12x = 17,686.76 × 5,217.92
  4. Step 4: Simplify right side
    11,787.12x = 92,288,050.54
  5. Step 5: Solve for x
    x = 92,288,050.54/11,787.12
  6. Step 6: Final answer
    x = 7,829.57

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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.