Home / 13,222.68-18,247.21-7,254.21

Finding the Fourth Proportional to 13,222.68, 18,247.21 and 7,254.21

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Solution

The fourth proportional to 13,222.68, 18,247.21 and 7,254.21 is: 10,010.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.68 : 18,247.21 = 7,254.21 : x
  2. Step 2: Convert to fraction form
    13,222.68/18,247.21 = 7,254.21/x
  3. Step 3: Cross multiply
    13,222.68x = 18,247.21 × 7,254.21
  4. Step 4: Simplify right side
    13,222.68x = 132,369,093.25
  5. Step 5: Solve for x
    x = 132,369,093.25/13,222.68
  6. Step 6: Final answer
    x = 10,010.76

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Double scale
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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.