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Finding the Fourth Proportional to 19,316.52, 28,978.92 and 11,000.52

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Solution

The fourth proportional to 19,316.52, 28,978.92 and 11,000.52 is: 16,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.52 : 28,978.92 = 11,000.52 : x
  2. Step 2: Convert to fraction form
    19,316.52/28,978.92 = 11,000.52/x
  3. Step 3: Cross multiply
    19,316.52x = 28,978.92 × 11,000.52
  4. Step 4: Simplify right side
    19,316.52x = 318,783,189.04
  5. Step 5: Solve for x
    x = 318,783,189.04/19,316.52
  6. Step 6: Final answer
    x = 16,503.14

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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.