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Finding the Fourth Proportional to 18,825.71, 28,220.19 and 8,962.34

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Solution

The fourth proportional to 18,825.71, 28,220.19 and 8,962.34 is: 13,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.71 : 28,220.19 = 8,962.34 : x
  2. Step 2: Convert to fraction form
    18,825.71/28,220.19 = 8,962.34/x
  3. Step 3: Cross multiply
    18,825.71x = 28,220.19 × 8,962.34
  4. Step 4: Simplify right side
    18,825.71x = 252,918,796.54
  5. Step 5: Solve for x
    x = 252,918,796.54/18,825.71
  6. Step 6: Final answer
    x = 13,434.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.