Home / 14,660.75-20,231.33-8,688.87

Finding the Fourth Proportional to 14,660.75, 20,231.33 and 8,688.87

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Solution

The fourth proportional to 14,660.75, 20,231.33 and 8,688.87 is: 11,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.75 : 20,231.33 = 8,688.87 : x
  2. Step 2: Convert to fraction form
    14,660.75/20,231.33 = 8,688.87/x
  3. Step 3: Cross multiply
    14,660.75x = 20,231.33 × 8,688.87
  4. Step 4: Simplify right side
    14,660.75x = 175,787,309.57
  5. Step 5: Solve for x
    x = 175,787,309.57/14,660.75
  6. Step 6: Final answer
    x = 11,990.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.