Home / 13,711.46-18,921.11-7,660.62

Finding the Fourth Proportional to 13,711.46, 18,921.11 and 7,660.62

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Solution

The fourth proportional to 13,711.46, 18,921.11 and 7,660.62 is: 10,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.46 : 18,921.11 = 7,660.62 : x
  2. Step 2: Convert to fraction form
    13,711.46/18,921.11 = 7,660.62/x
  3. Step 3: Cross multiply
    13,711.46x = 18,921.11 × 7,660.62
  4. Step 4: Simplify right side
    13,711.46x = 144,947,395.39
  5. Step 5: Solve for x
    x = 144,947,395.39/13,711.46
  6. Step 6: Final answer
    x = 10,571.26

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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.