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Finding the Fourth Proportional to 18,893.34, 28,308.87 and 10,973.62

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Solution

The fourth proportional to 18,893.34, 28,308.87 and 10,973.62 is: 16,442.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.34 : 28,308.87 = 10,973.62 : x
  2. Step 2: Convert to fraction form
    18,893.34/28,308.87 = 10,973.62/x
  3. Step 3: Cross multiply
    18,893.34x = 28,308.87 × 10,973.62
  4. Step 4: Simplify right side
    18,893.34x = 310,650,873.05
  5. Step 5: Solve for x
    x = 310,650,873.05/18,893.34
  6. Step 6: Final answer
    x = 16,442.35

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1.5x scale

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.