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Finding the Fourth Proportional to 18,754.50, 28,132.02 and 4,903.50

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Solution

The fourth proportional to 18,754.50, 28,132.02 and 4,903.50 is: 7,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.50 : 28,132.02 = 4,903.50 : x
  2. Step 2: Convert to fraction form
    18,754.50/28,132.02 = 4,903.50/x
  3. Step 3: Cross multiply
    18,754.50x = 28,132.02 × 4,903.50
  4. Step 4: Simplify right side
    18,754.50x = 137,945,360.07
  5. Step 5: Solve for x
    x = 137,945,360.07/18,754.50
  6. Step 6: Final answer
    x = 7,355.32

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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.