Home / 39,279.40-58,906.86-12,977.80

Finding the Fourth Proportional to 39,279.40, 58,906.86 and 12,977.80

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Solution

The fourth proportional to 39,279.40, 58,906.86 and 12,977.80 is: 19,462.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.40 : 58,906.86 = 12,977.80 : x
  2. Step 2: Convert to fraction form
    39,279.40/58,906.86 = 12,977.80/x
  3. Step 3: Cross multiply
    39,279.40x = 58,906.86 × 12,977.80
  4. Step 4: Simplify right side
    39,279.40x = 764,481,447.71
  5. Step 5: Solve for x
    x = 764,481,447.71/39,279.40
  6. Step 6: Final answer
    x = 19,462.66

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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.