Home / 30,105.26-41,532.17-21,158.61

Finding the Fourth Proportional to 30,105.26, 41,532.17 and 21,158.61

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Solution

The fourth proportional to 30,105.26, 41,532.17 and 21,158.61 is: 29,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,105.26 : 41,532.17 = 21,158.61 : x
  2. Step 2: Convert to fraction form
    30,105.26/41,532.17 = 21,158.61/x
  3. Step 3: Cross multiply
    30,105.26x = 41,532.17 × 21,158.61
  4. Step 4: Simplify right side
    30,105.26x = 878,762,881.69
  5. Step 5: Solve for x
    x = 878,762,881.69/30,105.26
  6. Step 6: Final answer
    x = 29,189.68

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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.