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Finding the Fourth Proportional to 18,903, 28,355.67 and 5,756.34

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Solution

The fourth proportional to 18,903, 28,355.67 and 5,756.34 is: 8,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903 : 28,355.67 = 5,756.34 : x
  2. Step 2: Convert to fraction form
    18,903/28,355.67 = 5,756.34/x
  3. Step 3: Cross multiply
    18,903x = 28,355.67 × 5,756.34
  4. Step 4: Simplify right side
    18,903x = 163,224,877.45
  5. Step 5: Solve for x
    x = 163,224,877.45/18,903
  6. Step 6: Final answer
    x = 8,634.87

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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.