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Finding the Fourth Proportional to 18,483.89, 27,721.76 and 5,333.40

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Solution

The fourth proportional to 18,483.89, 27,721.76 and 5,333.40 is: 7,998.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.89 : 27,721.76 = 5,333.40 : x
  2. Step 2: Convert to fraction form
    18,483.89/27,721.76 = 5,333.40/x
  3. Step 3: Cross multiply
    18,483.89x = 27,721.76 × 5,333.40
  4. Step 4: Simplify right side
    18,483.89x = 147,851,208.12
  5. Step 5: Solve for x
    x = 147,851,208.12/18,483.89
  6. Step 6: Final answer
    x = 7,998.92

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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.