Home / 12,785.40-19,174.32-5,761.35

Finding the Fourth Proportional to 12,785.40, 19,174.32 and 5,761.35

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Solution

The fourth proportional to 12,785.40, 19,174.32 and 5,761.35 is: 8,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.40 : 19,174.32 = 5,761.35 : x
  2. Step 2: Convert to fraction form
    12,785.40/19,174.32 = 5,761.35/x
  3. Step 3: Cross multiply
    12,785.40x = 19,174.32 × 5,761.35
  4. Step 4: Simplify right side
    12,785.40x = 110,469,968.53
  5. Step 5: Solve for x
    x = 110,469,968.53/12,785.40
  6. Step 6: Final answer
    x = 8,640.32

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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.