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Finding the Fourth Proportional to 18,825.76, 28,220.28 and 8,962.39

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Solution

The fourth proportional to 18,825.76, 28,220.28 and 8,962.39 is: 13,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.76 : 28,220.28 = 8,962.39 : x
  2. Step 2: Convert to fraction form
    18,825.76/28,220.28 = 8,962.39/x
  3. Step 3: Cross multiply
    18,825.76x = 28,220.28 × 8,962.39
  4. Step 4: Simplify right side
    18,825.76x = 252,921,155.27
  5. Step 5: Solve for x
    x = 252,921,155.27/18,825.76
  6. Step 6: Final answer
    x = 13,434.84

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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.