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Finding the Fourth Proportional to 12,338.76, 18,521.94 and 4,948.32

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Solution

The fourth proportional to 12,338.76, 18,521.94 and 4,948.32 is: 7,428.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.76 : 18,521.94 = 4,948.32 : x
  2. Step 2: Convert to fraction form
    12,338.76/18,521.94 = 4,948.32/x
  3. Step 3: Cross multiply
    12,338.76x = 18,521.94 × 4,948.32
  4. Step 4: Simplify right side
    12,338.76x = 91,652,486.14
  5. Step 5: Solve for x
    x = 91,652,486.14/12,338.76
  6. Step 6: Final answer
    x = 7,428.01

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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.