Home / 12,759.78-19,128.33-4,966.77

Finding the Fourth Proportional to 12,759.78, 19,128.33 and 4,966.77

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Solution

The fourth proportional to 12,759.78, 19,128.33 and 4,966.77 is: 7,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.78 : 19,128.33 = 4,966.77 : x
  2. Step 2: Convert to fraction form
    12,759.78/19,128.33 = 4,966.77/x
  3. Step 3: Cross multiply
    12,759.78x = 19,128.33 × 4,966.77
  4. Step 4: Simplify right side
    12,759.78x = 95,006,015.59
  5. Step 5: Solve for x
    x = 95,006,015.59/12,759.78
  6. Step 6: Final answer
    x = 7,445.74

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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.