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Finding the Fourth Proportional to 18,886.50, 28,330.02 and 5,035.50

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Solution

The fourth proportional to 18,886.50, 28,330.02 and 5,035.50 is: 7,553.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.50 : 28,330.02 = 5,035.50 : x
  2. Step 2: Convert to fraction form
    18,886.50/28,330.02 = 5,035.50/x
  3. Step 3: Cross multiply
    18,886.50x = 28,330.02 × 5,035.50
  4. Step 4: Simplify right side
    18,886.50x = 142,655,815.71
  5. Step 5: Solve for x
    x = 142,655,815.71/18,886.50
  6. Step 6: Final answer
    x = 7,553.32

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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.