Home / 13,372.89-18,454.03-7,404.20

Finding the Fourth Proportional to 13,372.89, 18,454.03 and 7,404.20

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Solution

The fourth proportional to 13,372.89, 18,454.03 and 7,404.20 is: 10,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.89 : 18,454.03 = 7,404.20 : x
  2. Step 2: Convert to fraction form
    13,372.89/18,454.03 = 7,404.20/x
  3. Step 3: Cross multiply
    13,372.89x = 18,454.03 × 7,404.20
  4. Step 4: Simplify right side
    13,372.89x = 136,637,328.93
  5. Step 5: Solve for x
    x = 136,637,328.93/13,372.89
  6. Step 6: Final answer
    x = 10,217.49

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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.