Home / 13,942.49-19,240.20-7,568.78

Finding the Fourth Proportional to 13,942.49, 19,240.20 and 7,568.78

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Solution

The fourth proportional to 13,942.49, 19,240.20 and 7,568.78 is: 10,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.49 : 19,240.20 = 7,568.78 : x
  2. Step 2: Convert to fraction form
    13,942.49/19,240.20 = 7,568.78/x
  3. Step 3: Cross multiply
    13,942.49x = 19,240.20 × 7,568.78
  4. Step 4: Simplify right side
    13,942.49x = 145,624,744.76
  5. Step 5: Solve for x
    x = 145,624,744.76/13,942.49
  6. Step 6: Final answer
    x = 10,444.68

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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.