Home / 39,078.80-58,623.66-12,778.30

Finding the Fourth Proportional to 39,078.80, 58,623.66 and 12,778.30

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Solution

The fourth proportional to 39,078.80, 58,623.66 and 12,778.30 is: 19,169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.80 : 58,623.66 = 12,778.30 : x
  2. Step 2: Convert to fraction form
    39,078.80/58,623.66 = 12,778.30/x
  3. Step 3: Cross multiply
    39,078.80x = 58,623.66 × 12,778.30
  4. Step 4: Simplify right side
    39,078.80x = 749,110,568.02
  5. Step 5: Solve for x
    x = 749,110,568.02/39,078.80
  6. Step 6: Final answer
    x = 19,169.23

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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.