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Finding the Fourth Proportional to 12,603.92, 18,892.70 and 4,703

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Solution

The fourth proportional to 12,603.92, 18,892.70 and 4,703 is: 7,049.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.92 : 18,892.70 = 4,703 : x
  2. Step 2: Convert to fraction form
    12,603.92/18,892.70 = 4,703/x
  3. Step 3: Cross multiply
    12,603.92x = 18,892.70 × 4,703
  4. Step 4: Simplify right side
    12,603.92x = 88,852,368.10
  5. Step 5: Solve for x
    x = 88,852,368.10/12,603.92
  6. Step 6: Final answer
    x = 7,049.58

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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.