Home / 12,664.60-19,000.73-3,780.22

Finding the Fourth Proportional to 12,664.60, 19,000.73 and 3,780.22

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Solution

The fourth proportional to 12,664.60, 19,000.73 and 3,780.22 is: 5,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.60 : 19,000.73 = 3,780.22 : x
  2. Step 2: Convert to fraction form
    12,664.60/19,000.73 = 3,780.22/x
  3. Step 3: Cross multiply
    12,664.60x = 19,000.73 × 3,780.22
  4. Step 4: Simplify right side
    12,664.60x = 71,826,915.87
  5. Step 5: Solve for x
    x = 71,826,915.87/12,664.60
  6. Step 6: Final answer
    x = 5,671.47

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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.