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Finding the Fourth Proportional to 9,428.47, 13,010.93 and 5,236.99

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Solution

The fourth proportional to 9,428.47, 13,010.93 and 5,236.99 is: 7,226.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.47 : 13,010.93 = 5,236.99 : x
  2. Step 2: Convert to fraction form
    9,428.47/13,010.93 = 5,236.99/x
  3. Step 3: Cross multiply
    9,428.47x = 13,010.93 × 5,236.99
  4. Step 4: Simplify right side
    9,428.47x = 68,138,071.23
  5. Step 5: Solve for x
    x = 68,138,071.23/9,428.47
  6. Step 6: Final answer
    x = 7,226.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.