Home / 20,768.76-31,102.92-14,535

Finding the Fourth Proportional to 20,768.76, 31,102.92 and 14,535

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Solution

The fourth proportional to 20,768.76, 31,102.92 and 14,535 is: 21,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.76 : 31,102.92 = 14,535 : x
  2. Step 2: Convert to fraction form
    20,768.76/31,102.92 = 14,535/x
  3. Step 3: Cross multiply
    20,768.76x = 31,102.92 × 14,535
  4. Step 4: Simplify right side
    20,768.76x = 452,080,942.20
  5. Step 5: Solve for x
    x = 452,080,942.20/20,768.76
  6. Step 6: Final answer
    x = 21,767.35

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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.