Home / 20,788.14-31,187.08-14,217.42

Finding the Fourth Proportional to 20,788.14, 31,187.08 and 14,217.42

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Solution

The fourth proportional to 20,788.14, 31,187.08 and 14,217.42 is: 21,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.14 : 31,187.08 = 14,217.42 : x
  2. Step 2: Convert to fraction form
    20,788.14/31,187.08 = 14,217.42/x
  3. Step 3: Cross multiply
    20,788.14x = 31,187.08 × 14,217.42
  4. Step 4: Simplify right side
    20,788.14x = 443,399,814.93
  5. Step 5: Solve for x
    x = 443,399,814.93/20,788.14
  6. Step 6: Final answer
    x = 21,329.46

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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.