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Finding the Fourth Proportional to 28,903.23, 43,358.97 and 8,914.40

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Solution

The fourth proportional to 28,903.23, 43,358.97 and 8,914.40 is: 13,372.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.23 : 43,358.97 = 8,914.40 : x
  2. Step 2: Convert to fraction form
    28,903.23/43,358.97 = 8,914.40/x
  3. Step 3: Cross multiply
    28,903.23x = 43,358.97 × 8,914.40
  4. Step 4: Simplify right side
    28,903.23x = 386,519,157.60
  5. Step 5: Solve for x
    x = 386,519,157.60/28,903.23
  6. Step 6: Final answer
    x = 13,372.87

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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.