Home / 20,788.74-31,187.45-6,749.06

Finding the Fourth Proportional to 20,788.74, 31,187.45 and 6,749.06

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Solution

The fourth proportional to 20,788.74, 31,187.45 and 6,749.06 is: 10,124.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.74 : 31,187.45 = 6,749.06 : x
  2. Step 2: Convert to fraction form
    20,788.74/31,187.45 = 6,749.06/x
  3. Step 3: Cross multiply
    20,788.74x = 31,187.45 × 6,749.06
  4. Step 4: Simplify right side
    20,788.74x = 210,485,918.72
  5. Step 5: Solve for x
    x = 210,485,918.72/20,788.74
  6. Step 6: Final answer
    x = 10,124.99

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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.