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Finding the Fourth Proportional to 18,773.50, 25,913.21 and 10,821.03

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Solution

The fourth proportional to 18,773.50, 25,913.21 and 10,821.03 is: 14,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.50 : 25,913.21 = 10,821.03 : x
  2. Step 2: Convert to fraction form
    18,773.50/25,913.21 = 10,821.03/x
  3. Step 3: Cross multiply
    18,773.50x = 25,913.21 × 10,821.03
  4. Step 4: Simplify right side
    18,773.50x = 280,407,622.81
  5. Step 5: Solve for x
    x = 280,407,622.81/18,773.50
  6. Step 6: Final answer
    x = 14,936.35

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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.