Home / 13,240.22-18,271.44-7,272

Finding the Fourth Proportional to 13,240.22, 18,271.44 and 7,272

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Solution

The fourth proportional to 13,240.22, 18,271.44 and 7,272 is: 10,035.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.22 : 18,271.44 = 7,272 : x
  2. Step 2: Convert to fraction form
    13,240.22/18,271.44 = 7,272/x
  3. Step 3: Cross multiply
    13,240.22x = 18,271.44 × 7,272
  4. Step 4: Simplify right side
    13,240.22x = 132,869,911.68
  5. Step 5: Solve for x
    x = 132,869,911.68/13,240.22
  6. Step 6: Final answer
    x = 10,035.33

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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.