Home / 12,830.40-19,255.32-8,660.52

Finding the Fourth Proportional to 12,830.40, 19,255.32 and 8,660.52

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Solution

The fourth proportional to 12,830.40, 19,255.32 and 8,660.52 is: 12,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,830.40 : 19,255.32 = 8,660.52 : x
  2. Step 2: Convert to fraction form
    12,830.40/19,255.32 = 8,660.52/x
  3. Step 3: Cross multiply
    12,830.40x = 19,255.32 × 8,660.52
  4. Step 4: Simplify right side
    12,830.40x = 166,761,083.97
  5. Step 5: Solve for x
    x = 166,761,083.97/12,830.40
  6. Step 6: Final answer
    x = 12,997.34

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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.