Home / 39,106.20-58,644.90-12,811.80

Finding the Fourth Proportional to 39,106.20, 58,644.90 and 12,811.80

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Solution

The fourth proportional to 39,106.20, 58,644.90 and 12,811.80 is: 19,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,106.20 : 58,644.90 = 12,811.80 : x
  2. Step 2: Convert to fraction form
    39,106.20/58,644.90 = 12,811.80/x
  3. Step 3: Cross multiply
    39,106.20x = 58,644.90 × 12,811.80
  4. Step 4: Simplify right side
    39,106.20x = 751,346,729.82
  5. Step 5: Solve for x
    x = 751,346,729.82/39,106.20
  6. Step 6: Final answer
    x = 19,212.98

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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.