Home / 39,119.11-58,686.84-12,821.79

Finding the Fourth Proportional to 39,119.11, 58,686.84 and 12,821.79

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Solution

The fourth proportional to 39,119.11, 58,686.84 and 12,821.79 is: 19,235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,119.11 : 58,686.84 = 12,821.79 : x
  2. Step 2: Convert to fraction form
    39,119.11/58,686.84 = 12,821.79/x
  3. Step 3: Cross multiply
    39,119.11x = 58,686.84 × 12,821.79
  4. Step 4: Simplify right side
    39,119.11x = 752,469,980.70
  5. Step 5: Solve for x
    x = 752,469,980.70/39,119.11
  6. Step 6: Final answer
    x = 19,235.36

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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.