Home / 20,847.13-31,274.63-8,368.13

Finding the Fourth Proportional to 20,847.13, 31,274.63 and 8,368.13

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Solution

The fourth proportional to 20,847.13, 31,274.63 and 8,368.13 is: 12,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.13 : 31,274.63 = 8,368.13 : x
  2. Step 2: Convert to fraction form
    20,847.13/31,274.63 = 8,368.13/x
  3. Step 3: Cross multiply
    20,847.13x = 31,274.63 × 8,368.13
  4. Step 4: Simplify right side
    20,847.13x = 261,710,237.27
  5. Step 5: Solve for x
    x = 261,710,237.27/20,847.13
  6. Step 6: Final answer
    x = 12,553.78

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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.