Home / 13,261.21-18,299.78-7,292.72

Finding the Fourth Proportional to 13,261.21, 18,299.78 and 7,292.72

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Solution

The fourth proportional to 13,261.21, 18,299.78 and 7,292.72 is: 10,063.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.21 : 18,299.78 = 7,292.72 : x
  2. Step 2: Convert to fraction form
    13,261.21/18,299.78 = 7,292.72/x
  3. Step 3: Cross multiply
    13,261.21x = 18,299.78 × 7,292.72
  4. Step 4: Simplify right side
    13,261.21x = 133,455,135.14
  5. Step 5: Solve for x
    x = 133,455,135.14/13,261.21
  6. Step 6: Final answer
    x = 10,063.58

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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.