Home / 13,372.40-18,453.78-7,404.02

Finding the Fourth Proportional to 13,372.40, 18,453.78 and 7,404.02

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Solution

The fourth proportional to 13,372.40, 18,453.78 and 7,404.02 is: 10,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.40 : 18,453.78 = 7,404.02 : x
  2. Step 2: Convert to fraction form
    13,372.40/18,453.78 = 7,404.02/x
  3. Step 3: Cross multiply
    13,372.40x = 18,453.78 × 7,404.02
  4. Step 4: Simplify right side
    13,372.40x = 136,632,156.20
  5. Step 5: Solve for x
    x = 136,632,156.20/13,372.40
  6. Step 6: Final answer
    x = 10,217.47

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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.