Home / 13,372.79-18,454.58-7,404.56

Finding the Fourth Proportional to 13,372.79, 18,454.58 and 7,404.56

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Solution

The fourth proportional to 13,372.79, 18,454.58 and 7,404.56 is: 10,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.79 : 18,454.58 = 7,404.56 : x
  2. Step 2: Convert to fraction form
    13,372.79/18,454.58 = 7,404.56/x
  3. Step 3: Cross multiply
    13,372.79x = 18,454.58 × 7,404.56
  4. Step 4: Simplify right side
    13,372.79x = 136,647,915.59
  5. Step 5: Solve for x
    x = 136,647,915.59/13,372.79
  6. Step 6: Final answer
    x = 10,218.36

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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.