Home / 13,209.79-18,229.64-7,241.58

Finding the Fourth Proportional to 13,209.79, 18,229.64 and 7,241.58

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Solution

The fourth proportional to 13,209.79, 18,229.64 and 7,241.58 is: 9,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.79 : 18,229.64 = 7,241.58 : x
  2. Step 2: Convert to fraction form
    13,209.79/18,229.64 = 7,241.58/x
  3. Step 3: Cross multiply
    13,209.79x = 18,229.64 × 7,241.58
  4. Step 4: Simplify right side
    13,209.79x = 132,011,396.43
  5. Step 5: Solve for x
    x = 132,011,396.43/13,209.79
  6. Step 6: Final answer
    x = 9,993.45

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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.