Home / 39,179.78-58,773.77-12,886.57

Finding the Fourth Proportional to 39,179.78, 58,773.77 and 12,886.57

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Solution

The fourth proportional to 39,179.78, 58,773.77 and 12,886.57 is: 19,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,179.78 : 58,773.77 = 12,886.57 : x
  2. Step 2: Convert to fraction form
    39,179.78/58,773.77 = 12,886.57/x
  3. Step 3: Cross multiply
    39,179.78x = 58,773.77 × 12,886.57
  4. Step 4: Simplify right side
    39,179.78x = 757,392,269.05
  5. Step 5: Solve for x
    x = 757,392,269.05/39,179.78
  6. Step 6: Final answer
    x = 19,331.20

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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.