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Finding the Fourth Proportional to 18,980.83, 28,452.17 and 6,492.31

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Solution

The fourth proportional to 18,980.83, 28,452.17 and 6,492.31 is: 9,731.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.83 : 28,452.17 = 6,492.31 : x
  2. Step 2: Convert to fraction form
    18,980.83/28,452.17 = 6,492.31/x
  3. Step 3: Cross multiply
    18,980.83x = 28,452.17 × 6,492.31
  4. Step 4: Simplify right side
    18,980.83x = 184,720,362.71
  5. Step 5: Solve for x
    x = 184,720,362.71/18,980.83
  6. Step 6: Final answer
    x = 9,731.95

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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.