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Finding the Fourth Proportional to 9,903.30, 13,666.62 and 5,427.46

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Solution

The fourth proportional to 9,903.30, 13,666.62 and 5,427.46 is: 7,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.30 : 13,666.62 = 5,427.46 : x
  2. Step 2: Convert to fraction form
    9,903.30/13,666.62 = 5,427.46/x
  3. Step 3: Cross multiply
    9,903.30x = 13,666.62 × 5,427.46
  4. Step 4: Simplify right side
    9,903.30x = 74,175,033.39
  5. Step 5: Solve for x
    x = 74,175,033.39/9,903.30
  6. Step 6: Final answer
    x = 7,489.93

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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.