Home / 20,778.39-31,167.59-16,107.93

Finding the Fourth Proportional to 20,778.39, 31,167.59 and 16,107.93

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Solution

The fourth proportional to 20,778.39, 31,167.59 and 16,107.93 is: 24,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.39 : 31,167.59 = 16,107.93 : x
  2. Step 2: Convert to fraction form
    20,778.39/31,167.59 = 16,107.93/x
  3. Step 3: Cross multiply
    20,778.39x = 31,167.59 × 16,107.93
  4. Step 4: Simplify right side
    20,778.39x = 502,045,277.45
  5. Step 5: Solve for x
    x = 502,045,277.45/20,778.39
  6. Step 6: Final answer
    x = 24,161.90

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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.