Home / 13,240.28-18,270.66-7,272.34

Finding the Fourth Proportional to 13,240.28, 18,270.66 and 7,272.34

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Solution

The fourth proportional to 13,240.28, 18,270.66 and 7,272.34 is: 10,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.28 : 18,270.66 = 7,272.34 : x
  2. Step 2: Convert to fraction form
    13,240.28/18,270.66 = 7,272.34/x
  3. Step 3: Cross multiply
    13,240.28x = 18,270.66 × 7,272.34
  4. Step 4: Simplify right side
    13,240.28x = 132,870,451.54
  5. Step 5: Solve for x
    x = 132,870,451.54/13,240.28
  6. Step 6: Final answer
    x = 10,035.32

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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.