Home / 11,878.07-17,840.18-8,745.71

Finding the Fourth Proportional to 11,878.07, 17,840.18 and 8,745.71

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Solution

The fourth proportional to 11,878.07, 17,840.18 and 8,745.71 is: 13,135.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.07 : 17,840.18 = 8,745.71 : x
  2. Step 2: Convert to fraction form
    11,878.07/17,840.18 = 8,745.71/x
  3. Step 3: Cross multiply
    11,878.07x = 17,840.18 × 8,745.71
  4. Step 4: Simplify right side
    11,878.07x = 156,024,966.07
  5. Step 5: Solve for x
    x = 156,024,966.07/11,878.07
  6. Step 6: Final answer
    x = 13,135.54

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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.