Home / 13,240.72-18,272.01-7,272.44

Finding the Fourth Proportional to 13,240.72, 18,272.01 and 7,272.44

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Solution

The fourth proportional to 13,240.72, 18,272.01 and 7,272.44 is: 10,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.72 : 18,272.01 = 7,272.44 : x
  2. Step 2: Convert to fraction form
    13,240.72/18,272.01 = 7,272.44/x
  3. Step 3: Cross multiply
    13,240.72x = 18,272.01 × 7,272.44
  4. Step 4: Simplify right side
    13,240.72x = 132,882,096.40
  5. Step 5: Solve for x
    x = 132,882,096.40/13,240.72
  6. Step 6: Final answer
    x = 10,035.87

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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.