Home / 13,299.84-18,356.46-7,638.42

Finding the Fourth Proportional to 13,299.84, 18,356.46 and 7,638.42

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Solution

The fourth proportional to 13,299.84, 18,356.46 and 7,638.42 is: 10,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.84 : 18,356.46 = 7,638.42 : x
  2. Step 2: Convert to fraction form
    13,299.84/18,356.46 = 7,638.42/x
  3. Step 3: Cross multiply
    13,299.84x = 18,356.46 × 7,638.42
  4. Step 4: Simplify right side
    13,299.84x = 140,214,351.19
  5. Step 5: Solve for x
    x = 140,214,351.19/13,299.84
  6. Step 6: Final answer
    x = 10,542.56

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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.