Home / 20,674.28-31,005.93-8,984.75

Finding the Fourth Proportional to 20,674.28, 31,005.93 and 8,984.75

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Solution

The fourth proportional to 20,674.28, 31,005.93 and 8,984.75 is: 13,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.28 : 31,005.93 = 8,984.75 : x
  2. Step 2: Convert to fraction form
    20,674.28/31,005.93 = 8,984.75/x
  3. Step 3: Cross multiply
    20,674.28x = 31,005.93 × 8,984.75
  4. Step 4: Simplify right side
    20,674.28x = 278,580,529.57
  5. Step 5: Solve for x
    x = 278,580,529.57/20,674.28
  6. Step 6: Final answer
    x = 13,474.74

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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.