Home / 22,419.60-30,905.25-18,433.80

Finding the Fourth Proportional to 22,419.60, 30,905.25 and 18,433.80

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Solution

The fourth proportional to 22,419.60, 30,905.25 and 18,433.80 is: 25,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419.60 : 30,905.25 = 18,433.80 : x
  2. Step 2: Convert to fraction form
    22,419.60/30,905.25 = 18,433.80/x
  3. Step 3: Cross multiply
    22,419.60x = 30,905.25 × 18,433.80
  4. Step 4: Simplify right side
    22,419.60x = 569,701,197.45
  5. Step 5: Solve for x
    x = 569,701,197.45/22,419.60
  6. Step 6: Final answer
    x = 25,410.85

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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.